TY  - JOUR
AU  - Jovanović, Milan T.
AU  - Nikolić, Katarina
AU  - Čarapić, Marija
AU  - Aleksić, Mara M.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11362
AB  - A comprehensive investigation of tyrosine kinase inhibitor erlotinib (ERL) electrochemical behavior and interaction with DNA was performed with the aim to clarify its redox mechanism and to determine the mode of binding. Irreversible oxidation and reduction processes of ERL on glassy carbon electrode were investigated using three voltammetric techniques CV, DPV, SWV in pH range between 2.0 and 9.0. Oxidation was established as an adsorption-controlled process, while the reduction manifested diffusion-adsorption mixed controlled process in acidic medium and adsorption became predominant in the neutral solutions. According to the determined number of transferred electrons and protons, oxidation and reduction mechanism of ERL are proposed. To follow the interaction between ERL and DNA, the multilayer ct-DNA electrochemical biosensor was incubated in ERL solutions concentrations ranged from 2 × 10–7 M to 5 × 10–5 M (pH 4.6) for 30 min. SWV measurements have shown the decrease in deoxyadenosine peak current as a consequence of ERL increased concentration and binding to ct-DNA. The calculated value of binding constant was K = 8.25 × 104 M−1. Molecular docking showed that ERL forms hydrophobic interactions when docked into minor groove, as well as when intercalated, and molecular dynamics analysis predicted the stability of obtained complexes. These results together with voltammetric studies imply that the intercalation could be more dominant way ERL binding to DNA compared to minor groove binding. © 2023 Elsevier B.V.
T2  - Journal of Pharmaceutical and Biomedical Analysis
T1  - Electrochemical and theoretical study on interaction between erlotinib and DNA
VL  - 234
SP  - 115560
DO  - 10.1016/j.jpba.2023.115560
ER  - 

@article{
author = "Jovanović, Milan T. and Nikolić, Katarina and Čarapić, Marija and Aleksić, Mara M.",
year = "2023",
abstract = "A comprehensive investigation of tyrosine kinase inhibitor erlotinib (ERL) electrochemical behavior and interaction with DNA was performed with the aim to clarify its redox mechanism and to determine the mode of binding. Irreversible oxidation and reduction processes of ERL on glassy carbon electrode were investigated using three voltammetric techniques CV, DPV, SWV in pH range between 2.0 and 9.0. Oxidation was established as an adsorption-controlled process, while the reduction manifested diffusion-adsorption mixed controlled process in acidic medium and adsorption became predominant in the neutral solutions. According to the determined number of transferred electrons and protons, oxidation and reduction mechanism of ERL are proposed. To follow the interaction between ERL and DNA, the multilayer ct-DNA electrochemical biosensor was incubated in ERL solutions concentrations ranged from 2 × 10–7 M to 5 × 10–5 M (pH 4.6) for 30 min. SWV measurements have shown the decrease in deoxyadenosine peak current as a consequence of ERL increased concentration and binding to ct-DNA. The calculated value of binding constant was K = 8.25 × 104 M−1. Molecular docking showed that ERL forms hydrophobic interactions when docked into minor groove, as well as when intercalated, and molecular dynamics analysis predicted the stability of obtained complexes. These results together with voltammetric studies imply that the intercalation could be more dominant way ERL binding to DNA compared to minor groove binding. © 2023 Elsevier B.V.",
journal = "Journal of Pharmaceutical and Biomedical Analysis",
title = "Electrochemical and theoretical study on interaction between erlotinib and DNA",
volume = "234",
pages = "115560",
doi = "10.1016/j.jpba.2023.115560"
}

Jovanović, M. T., Nikolić, K., Čarapić, M.,& Aleksić, M. M.. (2023). Electrochemical and theoretical study on interaction between erlotinib and DNA. in Journal of Pharmaceutical and Biomedical Analysis, 234, 115560.
https://doi.org/10.1016/j.jpba.2023.115560

Jovanović MT, Nikolić K, Čarapić M, Aleksić MM. Electrochemical and theoretical study on interaction between erlotinib and DNA. in Journal of Pharmaceutical and Biomedical Analysis. 2023;234:115560.
doi:10.1016/j.jpba.2023.115560 .

Jovanović, Milan T., Nikolić, Katarina, Čarapić, Marija, Aleksić, Mara M., "Electrochemical and theoretical study on interaction between erlotinib and DNA" in Journal of Pharmaceutical and Biomedical Analysis, 234 (2023):115560,
https://doi.org/10.1016/j.jpba.2023.115560 . .

TY  - CONF
AU  - Cvijović-Alagić, Ivana
AU  - Jovanović, Milan T.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11335
AB  - Automotive and aviation industries, as well as space-exploration technologies, are in demand for lightweight construction parts that are highly resistant to failure and degradation at elevated temperatures. Titanium aluminides are recognized as potential candidates for these applications since their low-density characteristics combined with good mechanical properties at elevated temperatures can fulfill the strict exploitation demands. Nevertheless, the resistance of titanium aluminides to high-temperature gas degradation should be additionally improved to enhance the performance of these materials in harsh working conditions. The scope of the present research was therefore directed to the investigation of Ti3Al-based alloy oxidation kinetics during the cyclic annealing at 600 oC and 900 oC in the air atmosphere to simulate exploitation conditions. Timedependent mass gain measurements were conducted for 120 h to obtain the kinetic models. The influence of the alloy's microstructural characteristics on its oxidative behavior was investigated with particular interest and for that purpose the examined Ti3Al-based alloy was subjected to different thermomechanical processing treatments prior to the high-temperature cyclic testing. Microscopic and X-ray diffraction methods were used to monitor the examined alloy characteristics before and after the oxidation tests. Obtained results indicated that an increase in the β phase fraction in the initial alloy microstructure influenced an increase in the alloy oxidation resistance, while an increase in the annealing temperature resulted in acceleration of the oxidative process.
AB  - Strogi zahtevi automobilske i avio industrije, kao i kosmonautike, usmereni su na upotrebu lakih konstrukcionih delova visokootpornih prema otkazu i degradaciji na povišenim temperaturama. Titan aluminidi su zbog svoje male gustine i dobrih mehaničkih svojstava na povišenim temperaturama prepoznati kao materijali koji bi mogli ispuniti prethodno navedene stroge eksploatacione zahteve. Ipak, poboljšanje otpornosti titan aluminida prema visokotemperaturnoj degradaciji nameće se kao dodatni zahtev kako bi se poboljšao sveukupni odgovor ovih materijala na oštre eksploatacione uslove. Istraživanje je zato bio usmereno na ispitivanje kinetike oksidacije legure na bazi Ti3Al jedinjenja tokom cikljičnog žarenja na 600 oC i 900 oC na vazduhu, koje simulira uslove prisutne u toku eksploatacije. Kako bi se definisali kinetički modeli vršena su vremenski zavisna merenja prinosa mase u periodu od 120 h. Uticaj mikrostrukturnih karakteristika na oksidaciono ponašanje legure na bazi Ti3Al jedinjenja je posebno razmatran zbog čega je legura podvrgnuta različitim režimima termomehaničke prerade pre visokotemperaturnog cikličnog ispitivanja. Mikroskopske i redgenostrukturne metode su primenjene kako bi se pratila svojstva ispitivane legure pre i nakon oksidacionog procesa. Ostvareni rezultati su pokazali da povećanje sadržaja β faze u početnoj mikrostrukturi legure uslovljava povećanje njene otpornosti prema oksidaciji dok povećanje temperature žarenja utiče na ubrzavanje samog oksidacionog procesa.
PB  - Beograd : Serbian Society of Corrosion and Materials Protection UISKOZAM = Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM
C3  - XXIII YuCorr International Conference : Proceedings
T1  - Titanium Aluminide Cyclic Oxidation Kinetics
T1  - Kinetika ciklične oksidacije titan aluminida
SP  - 150
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11335
ER  - 

@conference{
author = "Cvijović-Alagić, Ivana and Jovanović, Milan T.",
year = "2022",
abstract = "Automotive and aviation industries, as well as space-exploration technologies, are in demand for lightweight construction parts that are highly resistant to failure and degradation at elevated temperatures. Titanium aluminides are recognized as potential candidates for these applications since their low-density characteristics combined with good mechanical properties at elevated temperatures can fulfill the strict exploitation demands. Nevertheless, the resistance of titanium aluminides to high-temperature gas degradation should be additionally improved to enhance the performance of these materials in harsh working conditions. The scope of the present research was therefore directed to the investigation of Ti3Al-based alloy oxidation kinetics during the cyclic annealing at 600 oC and 900 oC in the air atmosphere to simulate exploitation conditions. Timedependent mass gain measurements were conducted for 120 h to obtain the kinetic models. The influence of the alloy's microstructural characteristics on its oxidative behavior was investigated with particular interest and for that purpose the examined Ti3Al-based alloy was subjected to different thermomechanical processing treatments prior to the high-temperature cyclic testing. Microscopic and X-ray diffraction methods were used to monitor the examined alloy characteristics before and after the oxidation tests. Obtained results indicated that an increase in the β phase fraction in the initial alloy microstructure influenced an increase in the alloy oxidation resistance, while an increase in the annealing temperature resulted in acceleration of the oxidative process., Strogi zahtevi automobilske i avio industrije, kao i kosmonautike, usmereni su na upotrebu lakih konstrukcionih delova visokootpornih prema otkazu i degradaciji na povišenim temperaturama. Titan aluminidi su zbog svoje male gustine i dobrih mehaničkih svojstava na povišenim temperaturama prepoznati kao materijali koji bi mogli ispuniti prethodno navedene stroge eksploatacione zahteve. Ipak, poboljšanje otpornosti titan aluminida prema visokotemperaturnoj degradaciji nameće se kao dodatni zahtev kako bi se poboljšao sveukupni odgovor ovih materijala na oštre eksploatacione uslove. Istraživanje je zato bio usmereno na ispitivanje kinetike oksidacije legure na bazi Ti3Al jedinjenja tokom cikljičnog žarenja na 600 oC i 900 oC na vazduhu, koje simulira uslove prisutne u toku eksploatacije. Kako bi se definisali kinetički modeli vršena su vremenski zavisna merenja prinosa mase u periodu od 120 h. Uticaj mikrostrukturnih karakteristika na oksidaciono ponašanje legure na bazi Ti3Al jedinjenja je posebno razmatran zbog čega je legura podvrgnuta različitim režimima termomehaničke prerade pre visokotemperaturnog cikličnog ispitivanja. Mikroskopske i redgenostrukturne metode su primenjene kako bi se pratila svojstva ispitivane legure pre i nakon oksidacionog procesa. Ostvareni rezultati su pokazali da povećanje sadržaja β faze u početnoj mikrostrukturi legure uslovljava povećanje njene otpornosti prema oksidaciji dok povećanje temperature žarenja utiče na ubrzavanje samog oksidacionog procesa.",
publisher = "Beograd : Serbian Society of Corrosion and Materials Protection UISKOZAM = Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM",
journal = "XXIII YuCorr International Conference : Proceedings",
title = "Titanium Aluminide Cyclic Oxidation Kinetics, Kinetika ciklične oksidacije titan aluminida",
pages = "150",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11335"
}

Cvijović-Alagić, I.,& Jovanović, M. T.. (2022). Titanium Aluminide Cyclic Oxidation Kinetics. in XXIII YuCorr International Conference : Proceedings
Beograd : Serbian Society of Corrosion and Materials Protection UISKOZAM = Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM., 150.
https://hdl.handle.net/21.15107/rcub_vinar_11335

Cvijović-Alagić I, Jovanović MT. Titanium Aluminide Cyclic Oxidation Kinetics. in XXIII YuCorr International Conference : Proceedings. 2022;:150.
https://hdl.handle.net/21.15107/rcub_vinar_11335 .

Cvijović-Alagić, Ivana, Jovanović, Milan T., "Titanium Aluminide Cyclic Oxidation Kinetics" in XXIII YuCorr International Conference : Proceedings (2022):150,
https://hdl.handle.net/21.15107/rcub_vinar_11335 .

TY  - JOUR
AU  - Cvijović-Alagić, Ivana
AU  - Jovanović, Milan T.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9964
AB  - Efficient  exploitation of  the industrial components at elevated temperatures and  in  aggressive  environments  is  demanded  in  modern  industrial  production.  The  Ti3Al-based  alloys  are  proposed  as  materials  that  can  meet  these  demands  since  it  is  determined  that  improved  high- temperature  corrosion  resistance  of  industrial  construction  materials  is  often  more  significant  for  industrial exploitation than the improvement of their mechanical properties. Therefore, the aim of the  present  research  was  to  determine  the  effect  of  various  parameters,  i.e.  initial  microstructure  and  high-temperature processing conditions, on the cyclic oxidation kinetics of the Ti3Al-based alloy with  the Ti-24Al-11Nb (at.%) composition. Cyclic oxidation tests were conducted in air at 600 and 900 oC.  The oxidation process was monitored up to 120 h by recording mass gain data as a function of time to  define  the  kinetic  models.  Examination  of  alloy  microstructure  and  alloy  degradation  during  the  cyclic oxidation  was  undertaken  using light microscopy  (LM),  scanning electron microscopy  (SEM),  energy dispersive spectroscopy (EDS), and X-ray diffraction (XRD). Alloy hot-rolled at 1050 oC and  hot-rolled  alloy  subsequently  thermally  treated  at  1200  oC  were  examined  before  and  after  cyclic  high-temperature  oxidation.  Obtained  results  indicated  that  the  initial  alloy  microstructure  has  a  significant  influence  on  its  high-temperature  oxidation  behavior.  Namely,  hot-rolled  alloy  thermally  treated at 1200 oC with a higher volume fraction of the β phase in the microstructure shows improved  oxidation  resistance  compared  to  the  alloy  only  hot-rolled  at  1050  oC.  An  increase  in  oxidation  temperature  caused  the  progress  in  alloy  degradation.  In  contrast  to  the  compact  external  layer  formed  at  the  alloy  surface  after  cyclic  oxidation  at  600  oC,  during  cyclic  oxidation  at  900  oC  formation  of  a  multi-layer  scale  was  observed.  The  main  products  of  oxidation are  Al2O3  and  TiO2.  Kinetic models of the Ti-24Al-11Nb (at.%) alloy cyclic oxidation at 600 oC and 900 oC in the air are  defined with linear and parabolic oxidation curves for most of the examined conditions.
T2  - Journal of Innovative Materials in Extreme Conditions
T1  - Effect of Processing Parameters on Ti3Al-based Alloy High-Temperature Cyclic Oxidation Kinetics
VL  - 2
IS  - 2
SP  - 2
EP  - 10
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9964
ER  - 

@article{
author = "Cvijović-Alagić, Ivana and Jovanović, Milan T.",
year = "2021",
abstract = "Efficient  exploitation of  the industrial components at elevated temperatures and  in  aggressive  environments  is  demanded  in  modern  industrial  production.  The  Ti3Al-based  alloys  are  proposed  as  materials  that  can  meet  these  demands  since  it  is  determined  that  improved  high- temperature  corrosion  resistance  of  industrial  construction  materials  is  often  more  significant  for  industrial exploitation than the improvement of their mechanical properties. Therefore, the aim of the  present  research  was  to  determine  the  effect  of  various  parameters,  i.e.  initial  microstructure  and  high-temperature processing conditions, on the cyclic oxidation kinetics of the Ti3Al-based alloy with  the Ti-24Al-11Nb (at.%) composition. Cyclic oxidation tests were conducted in air at 600 and 900 oC.  The oxidation process was monitored up to 120 h by recording mass gain data as a function of time to  define  the  kinetic  models.  Examination  of  alloy  microstructure  and  alloy  degradation  during  the  cyclic oxidation  was  undertaken  using light microscopy  (LM),  scanning electron microscopy  (SEM),  energy dispersive spectroscopy (EDS), and X-ray diffraction (XRD). Alloy hot-rolled at 1050 oC and  hot-rolled  alloy  subsequently  thermally  treated  at  1200  oC  were  examined  before  and  after  cyclic  high-temperature  oxidation.  Obtained  results  indicated  that  the  initial  alloy  microstructure  has  a  significant  influence  on  its  high-temperature  oxidation  behavior.  Namely,  hot-rolled  alloy  thermally  treated at 1200 oC with a higher volume fraction of the β phase in the microstructure shows improved  oxidation  resistance  compared  to  the  alloy  only  hot-rolled  at  1050  oC.  An  increase  in  oxidation  temperature  caused  the  progress  in  alloy  degradation.  In  contrast  to  the  compact  external  layer  formed  at  the  alloy  surface  after  cyclic  oxidation  at  600  oC,  during  cyclic  oxidation  at  900  oC  formation  of  a  multi-layer  scale  was  observed.  The  main  products  of  oxidation are  Al2O3  and  TiO2.  Kinetic models of the Ti-24Al-11Nb (at.%) alloy cyclic oxidation at 600 oC and 900 oC in the air are  defined with linear and parabolic oxidation curves for most of the examined conditions.",
journal = "Journal of Innovative Materials in Extreme Conditions",
title = "Effect of Processing Parameters on Ti3Al-based Alloy High-Temperature Cyclic Oxidation Kinetics",
volume = "2",
number = "2",
pages = "2-10",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9964"
}

Cvijović-Alagić, I.,& Jovanović, M. T.. (2021). Effect of Processing Parameters on Ti3Al-based Alloy High-Temperature Cyclic Oxidation Kinetics. in Journal of Innovative Materials in Extreme Conditions, 2(2), 2-10.
https://hdl.handle.net/21.15107/rcub_vinar_9964

Cvijović-Alagić I, Jovanović MT. Effect of Processing Parameters on Ti3Al-based Alloy High-Temperature Cyclic Oxidation Kinetics. in Journal of Innovative Materials in Extreme Conditions. 2021;2(2):2-10.
https://hdl.handle.net/21.15107/rcub_vinar_9964 .

Cvijović-Alagić, Ivana, Jovanović, Milan T., "Effect of Processing Parameters on Ti3Al-based Alloy High-Temperature Cyclic Oxidation Kinetics" in Journal of Innovative Materials in Extreme Conditions, 2, no. 2 (2021):2-10,
https://hdl.handle.net/21.15107/rcub_vinar_9964 .

TY  - JOUR
AU  - Cvijović-Alagić, Ivana
AU  - Maksimović, Vesna
AU  - Jovanović, Milan T.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9527
AB  - Recent research in the material science field is focused on the easy-to-apply and cost-effective production of the structural components with enhanced mechanical properties. As an answer to these new trends in the present study, the inexpensive household aluminum foils are used to produce the multilayer aluminum matrix composite. The aluminum matrix composites are manufactured by hot-rolling of the sandwiched foils and afterward subjected to microstructural characterization and mechanical testing. Analysis of the produced composite microstructure and fracture surface obtained after tensile testing was performed using the scanning electron microscopy (SEM). The qualitative fractographic analysis revealed that the ductile fracture features prevail in the overall fracture mode of the investigated multilayer composite, while the quantitative fractographic investigation allowed more detailed insight into the composite failure process and depicted critical parameters that led to the composite failure.
T2  - Metallurgical and Materials Engineering
T1  - Fractographic analysis of the aluminum matrix composite prepared by accumulative roll bonding
VL  - 26
IS  - 4
SP  - 349
EP  - 355
DO  - 10.30544/569
ER  - 

@article{
author = "Cvijović-Alagić, Ivana and Maksimović, Vesna and Jovanović, Milan T.",
year = "2020",
abstract = "Recent research in the material science field is focused on the easy-to-apply and cost-effective production of the structural components with enhanced mechanical properties. As an answer to these new trends in the present study, the inexpensive household aluminum foils are used to produce the multilayer aluminum matrix composite. The aluminum matrix composites are manufactured by hot-rolling of the sandwiched foils and afterward subjected to microstructural characterization and mechanical testing. Analysis of the produced composite microstructure and fracture surface obtained after tensile testing was performed using the scanning electron microscopy (SEM). The qualitative fractographic analysis revealed that the ductile fracture features prevail in the overall fracture mode of the investigated multilayer composite, while the quantitative fractographic investigation allowed more detailed insight into the composite failure process and depicted critical parameters that led to the composite failure.",
journal = "Metallurgical and Materials Engineering",
title = "Fractographic analysis of the aluminum matrix composite prepared by accumulative roll bonding",
volume = "26",
number = "4",
pages = "349-355",
doi = "10.30544/569"
}

Cvijović-Alagić, I., Maksimović, V.,& Jovanović, M. T.. (2020). Fractographic analysis of the aluminum matrix composite prepared by accumulative roll bonding. in Metallurgical and Materials Engineering, 26(4), 349-355.
https://doi.org/10.30544/569

Cvijović-Alagić I, Maksimović V, Jovanović MT. Fractographic analysis of the aluminum matrix composite prepared by accumulative roll bonding. in Metallurgical and Materials Engineering. 2020;26(4):349-355.
doi:10.30544/569 .

Cvijović-Alagić, Ivana, Maksimović, Vesna, Jovanović, Milan T., "Fractographic analysis of the aluminum matrix composite prepared by accumulative roll bonding" in Metallurgical and Materials Engineering, 26, no. 4 (2020):349-355,
https://doi.org/10.30544/569 . .

TY  - JOUR
AU  - Jovanović, Milan T.
AU  - Mišković, Zoran L.
AU  - Maksimović, Vesna
AU  - Cvijović-Alagić, Ivana
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8814
AB  - A severely damaged low carbon steel boiler tube was the object of this investigation. Detailed microstructural characterization was performed by optical microscopy, whereas scanning electron microscopy (SEM) was applied only in a few cases. Results show that a variety of microstructures was formed in the material of the damaged boiler tube during its exploitation. The failure of the tube is the result of very inhomogeneous overheating. The side of the boiler tube toward fire (F) was exposed to high overheating temperature, which in some locations was well above the A3 transformation temperature. The side toward boiler (BL) was subjected to lower temperatures, i.e. in the region mostly between A1 and A3 temperatures. Variations in temperatures and cooling rates, which resulted in microstructural inhomogeneity, are the main cause for the formation and multiplication of stresses leading to the rupture of the tube. © 2019, Association of Metallurgical Engineers of Serbia. All rights reserved.
T2  - Metallurgical and Materials Engineering
T1  - Optical microscopy as a simple method for analysis of boiler tube failure
VL  - 25
IS  - 4
SP  - 301
EP  - 313
DO  - 10.30544/461
ER  - 

@article{
author = "Jovanović, Milan T. and Mišković, Zoran L. and Maksimović, Vesna and Cvijović-Alagić, Ivana",
year = "2019",
abstract = "A severely damaged low carbon steel boiler tube was the object of this investigation. Detailed microstructural characterization was performed by optical microscopy, whereas scanning electron microscopy (SEM) was applied only in a few cases. Results show that a variety of microstructures was formed in the material of the damaged boiler tube during its exploitation. The failure of the tube is the result of very inhomogeneous overheating. The side of the boiler tube toward fire (F) was exposed to high overheating temperature, which in some locations was well above the A3 transformation temperature. The side toward boiler (BL) was subjected to lower temperatures, i.e. in the region mostly between A1 and A3 temperatures. Variations in temperatures and cooling rates, which resulted in microstructural inhomogeneity, are the main cause for the formation and multiplication of stresses leading to the rupture of the tube. © 2019, Association of Metallurgical Engineers of Serbia. All rights reserved.",
journal = "Metallurgical and Materials Engineering",
title = "Optical microscopy as a simple method for analysis of boiler tube failure",
volume = "25",
number = "4",
pages = "301-313",
doi = "10.30544/461"
}

Jovanović, M. T., Mišković, Z. L., Maksimović, V.,& Cvijović-Alagić, I.. (2019). Optical microscopy as a simple method for analysis of boiler tube failure. in Metallurgical and Materials Engineering, 25(4), 301-313.
https://doi.org/10.30544/461

Jovanović MT, Mišković ZL, Maksimović V, Cvijović-Alagić I. Optical microscopy as a simple method for analysis of boiler tube failure. in Metallurgical and Materials Engineering. 2019;25(4):301-313.
doi:10.30544/461 .

Jovanović, Milan T., Mišković, Zoran L., Maksimović, Vesna, Cvijović-Alagić, Ivana, "Optical microscopy as a simple method for analysis of boiler tube failure" in Metallurgical and Materials Engineering, 25, no. 4 (2019):301-313,
https://doi.org/10.30544/461 . .

TY  - JOUR
AU  - Cvijović-Alagić, Ivana
AU  - Cvijović, Zorica M.
AU  - Zagorac, Dejan
AU  - Jovanović, Milan T.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8398
AB  - The microstructure variation and oxidation behavior of a hot-rolled and quenched Ti-24Al-11Nb (at%) intermetallic alloy with and without protective Ni-20Cr (at%) coating were studied in the air at a cyclic annealing temperature of 600 °C and 900 °C. The phase transformations monitored up to 120 h of alloy oxidation and oxidation products were examined using different experimental techniques. The oxidation kinetics was determined by recording the mass gain vs. time data and oxidation activation energy was evaluated. It was found that the annealing temperature and deposited coating significantly affect the scale formation and growth. The alloy showed better oxidation resistance at 600 °C, irrespective of the protective coating application. The higher temperature promoted the formation of thicker and multi-layered scale predominantly composed of Nb-doped TiO2 and Al2O3 oxides, which cracked and spalled causing oxidation rate for an order of magnitude higher than that at 600 °C. The presence of AlN decelerated the oxide scale growth, which obeyed a parabolic rate law. It was also noted that a two-phase α2+β microstructure changed to a greater extent. With increasing temperature, the α2→β phase transformation occurred more intensive and new α2′′ and O-Ti2AlNb phase appeared. The Ni-20Cr coating reduced the oxidation rate at both temperatures and improved the scale-spallation resistance. The compact Cr2O3 layer formed on the coated alloy led to the preferential Al2O3 formation, increasing its amount in mixture with Nb-enriched TiO2 oxide. Thin TiN layer detected beneath the oxide scale also supported the formation of slow-growing Al2O3, leading to a decrease in the oxidation rate. The external scale suppression contributed to the greater diffusion zone enrichment, resulting in the faster O-Ti2AlNb formation. The experimentally observed O-Ti2AlNb formation was confirmed by ab initio modeling. Furthermore, additional structures were predicted and studied using first-principles calculations in the O-Ti2AlNb compound. © 2018
T2  - Ceramics International
T1  - Cyclic oxidation of Ti3Al-based materials
VL  - 45
IS  - 7
SP  - 9423
EP  - 9438
DO  - 10.1016/j.ceramint.2018.08.287
ER  - 

@article{
author = "Cvijović-Alagić, Ivana and Cvijović, Zorica M. and Zagorac, Dejan and Jovanović, Milan T.",
year = "2019",
abstract = "The microstructure variation and oxidation behavior of a hot-rolled and quenched Ti-24Al-11Nb (at%) intermetallic alloy with and without protective Ni-20Cr (at%) coating were studied in the air at a cyclic annealing temperature of 600 °C and 900 °C. The phase transformations monitored up to 120 h of alloy oxidation and oxidation products were examined using different experimental techniques. The oxidation kinetics was determined by recording the mass gain vs. time data and oxidation activation energy was evaluated. It was found that the annealing temperature and deposited coating significantly affect the scale formation and growth. The alloy showed better oxidation resistance at 600 °C, irrespective of the protective coating application. The higher temperature promoted the formation of thicker and multi-layered scale predominantly composed of Nb-doped TiO2 and Al2O3 oxides, which cracked and spalled causing oxidation rate for an order of magnitude higher than that at 600 °C. The presence of AlN decelerated the oxide scale growth, which obeyed a parabolic rate law. It was also noted that a two-phase α2+β microstructure changed to a greater extent. With increasing temperature, the α2→β phase transformation occurred more intensive and new α2′′ and O-Ti2AlNb phase appeared. The Ni-20Cr coating reduced the oxidation rate at both temperatures and improved the scale-spallation resistance. The compact Cr2O3 layer formed on the coated alloy led to the preferential Al2O3 formation, increasing its amount in mixture with Nb-enriched TiO2 oxide. Thin TiN layer detected beneath the oxide scale also supported the formation of slow-growing Al2O3, leading to a decrease in the oxidation rate. The external scale suppression contributed to the greater diffusion zone enrichment, resulting in the faster O-Ti2AlNb formation. The experimentally observed O-Ti2AlNb formation was confirmed by ab initio modeling. Furthermore, additional structures were predicted and studied using first-principles calculations in the O-Ti2AlNb compound. © 2018",
journal = "Ceramics International",
title = "Cyclic oxidation of Ti3Al-based materials",
volume = "45",
number = "7",
pages = "9423-9438",
doi = "10.1016/j.ceramint.2018.08.287"
}

Cvijović-Alagić, I., Cvijović, Z. M., Zagorac, D.,& Jovanović, M. T.. (2019). Cyclic oxidation of Ti3Al-based materials. in Ceramics International, 45(7), 9423-9438.
https://doi.org/10.1016/j.ceramint.2018.08.287

Cvijović-Alagić I, Cvijović ZM, Zagorac D, Jovanović MT. Cyclic oxidation of Ti3Al-based materials. in Ceramics International. 2019;45(7):9423-9438.
doi:10.1016/j.ceramint.2018.08.287 .

Cvijović-Alagić, Ivana, Cvijović, Zorica M., Zagorac, Dejan, Jovanović, Milan T., "Cyclic oxidation of Ti3Al-based materials" in Ceramics International, 45, no. 7 (2019):9423-9438,
https://doi.org/10.1016/j.ceramint.2018.08.287 . .

TY  - JOUR
AU  - Jovanović, Milan T.
AU  - Ilić, Nenad
AU  - Cvijović-Alagić, Ivana
AU  - Maksimović, Vesna
AU  - Zec, Slavica
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1833
AB  - Experimental results on processing, structural and mechanical characterization of a multilayer composite based on commercially pure aluminum foils were presented. A multilayer composite was produced by hot-rolling of anodized and non-anodized aluminum foils alternately sandwiched. In addition, the same process was applied for bonding of non-anodized foils. In both cases, obtained multilayer composites were compact and sound. In order to study composites microstructural evolution and mechanical properties, optical and scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), X-ray diffraction (XRD) analysis, hardness, tensile and three-point flexural tests were performed. Microstructural characterization confirmed that the rod-like particles distributed in parallel rows in the composite aluminum matrix with anodized foils correspond to Al2O3. Maximum and minimum peaks of oxygen and aluminum, respectively, suggest that after the final hot-rolling of composite with non-anodized foils, a small amount of coarser particles were formed at boundaries between foils. Hardness, strength, modulus of elasticity and flexural strength of both multilayer composites were much higher than those of pure aluminum, whereas ductility was significantly less. The composite with anodized foils exhibited the highest strength and modulus of elasticity, but lower ductility compared to composite processed from non-anodized foils. Fracture failure corresponded to the change of ductility.
T2  - Transactions of Nonferrous Metals Society of China
T1  - Multilayer aluminum composites prepared by rolling of pure and anodized aluminum foils
VL  - 27
IS  - 9
SP  - 1907
EP  - 1919
DO  - 10.1016/S1003-6326(17)60215-2
ER  - 

@article{
author = "Jovanović, Milan T. and Ilić, Nenad and Cvijović-Alagić, Ivana and Maksimović, Vesna and Zec, Slavica",
year = "2017",
abstract = "Experimental results on processing, structural and mechanical characterization of a multilayer composite based on commercially pure aluminum foils were presented. A multilayer composite was produced by hot-rolling of anodized and non-anodized aluminum foils alternately sandwiched. In addition, the same process was applied for bonding of non-anodized foils. In both cases, obtained multilayer composites were compact and sound. In order to study composites microstructural evolution and mechanical properties, optical and scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), X-ray diffraction (XRD) analysis, hardness, tensile and three-point flexural tests were performed. Microstructural characterization confirmed that the rod-like particles distributed in parallel rows in the composite aluminum matrix with anodized foils correspond to Al2O3. Maximum and minimum peaks of oxygen and aluminum, respectively, suggest that after the final hot-rolling of composite with non-anodized foils, a small amount of coarser particles were formed at boundaries between foils. Hardness, strength, modulus of elasticity and flexural strength of both multilayer composites were much higher than those of pure aluminum, whereas ductility was significantly less. The composite with anodized foils exhibited the highest strength and modulus of elasticity, but lower ductility compared to composite processed from non-anodized foils. Fracture failure corresponded to the change of ductility.",
journal = "Transactions of Nonferrous Metals Society of China",
title = "Multilayer aluminum composites prepared by rolling of pure and anodized aluminum foils",
volume = "27",
number = "9",
pages = "1907-1919",
doi = "10.1016/S1003-6326(17)60215-2"
}

Jovanović, M. T., Ilić, N., Cvijović-Alagić, I., Maksimović, V.,& Zec, S.. (2017). Multilayer aluminum composites prepared by rolling of pure and anodized aluminum foils. in Transactions of Nonferrous Metals Society of China, 27(9), 1907-1919.
https://doi.org/10.1016/S1003-6326(17)60215-2

Jovanović MT, Ilić N, Cvijović-Alagić I, Maksimović V, Zec S. Multilayer aluminum composites prepared by rolling of pure and anodized aluminum foils. in Transactions of Nonferrous Metals Society of China. 2017;27(9):1907-1919.
doi:10.1016/S1003-6326(17)60215-2 .

Jovanović, Milan T., Ilić, Nenad, Cvijović-Alagić, Ivana, Maksimović, Vesna, Zec, Slavica, "Multilayer aluminum composites prepared by rolling of pure and anodized aluminum foils" in Transactions of Nonferrous Metals Society of China, 27, no. 9 (2017):1907-1919,
https://doi.org/10.1016/S1003-6326(17)60215-2 . .

TY  - JOUR
AU  - Jovanović, Milan T.
AU  - Drobnjak, Đorđe
AU  - Cvijović-Alagić, Ivana
AU  - Maksimović, Vesna
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1711
AB  - Tensile properties and fracture mechanism of a polycrystalline IN-100 superalloy have been investigated in the range from room temperature to 900 degrees C. Optical microscopy (OM) and transmission electron microscopy (TEM) applying replica technique were used for microstructural investigation, whereas scanning electron microscopy (SEM) was utilized for fracture study. High temperature tensile tests were carried out in vacuumed chamber. Results show that strength increases up to 700 degrees C, and then sharply decreases with further increase in temperature. Elongation increases very slowly (6-7.5%) till 500 degrees C, then decreases to 4.5% at 900 degrees C. Change in elongation may be ascribed to a change of fracture mechanism. Appearance of a great number of microvoids prevails up to 500 degrees C resulting in a slow increase of elongation, whereas above this temperature elongation decrease is correlated with intergranular crystallographic fracture and fracture of carbides.
T2  - Metallurgical and Materials Engineering
T1  - Tensile Properties and Fracture Mechanism of In-100 Superalloy in High Temperature Range
VL  - 23
IS  - 2
SP  - 99
EP  - 107
UR  - https://hdl.handle.net/21.15107/rcub_vinar_1711
ER  - 

@article{
author = "Jovanović, Milan T. and Drobnjak, Đorđe and Cvijović-Alagić, Ivana and Maksimović, Vesna",
year = "2017",
abstract = "Tensile properties and fracture mechanism of a polycrystalline IN-100 superalloy have been investigated in the range from room temperature to 900 degrees C. Optical microscopy (OM) and transmission electron microscopy (TEM) applying replica technique were used for microstructural investigation, whereas scanning electron microscopy (SEM) was utilized for fracture study. High temperature tensile tests were carried out in vacuumed chamber. Results show that strength increases up to 700 degrees C, and then sharply decreases with further increase in temperature. Elongation increases very slowly (6-7.5%) till 500 degrees C, then decreases to 4.5% at 900 degrees C. Change in elongation may be ascribed to a change of fracture mechanism. Appearance of a great number of microvoids prevails up to 500 degrees C resulting in a slow increase of elongation, whereas above this temperature elongation decrease is correlated with intergranular crystallographic fracture and fracture of carbides.",
journal = "Metallurgical and Materials Engineering",
title = "Tensile Properties and Fracture Mechanism of In-100 Superalloy in High Temperature Range",
volume = "23",
number = "2",
pages = "99-107",
url = "https://hdl.handle.net/21.15107/rcub_vinar_1711"
}

Jovanović, M. T., Drobnjak, Đ., Cvijović-Alagić, I.,& Maksimović, V.. (2017). Tensile Properties and Fracture Mechanism of In-100 Superalloy in High Temperature Range. in Metallurgical and Materials Engineering, 23(2), 99-107.
https://hdl.handle.net/21.15107/rcub_vinar_1711

Jovanović MT, Drobnjak Đ, Cvijović-Alagić I, Maksimović V. Tensile Properties and Fracture Mechanism of In-100 Superalloy in High Temperature Range. in Metallurgical and Materials Engineering. 2017;23(2):99-107.
https://hdl.handle.net/21.15107/rcub_vinar_1711 .

Jovanović, Milan T., Drobnjak, Đorđe, Cvijović-Alagić, Ivana, Maksimović, Vesna, "Tensile Properties and Fracture Mechanism of In-100 Superalloy in High Temperature Range" in Metallurgical and Materials Engineering, 23, no. 2 (2017):99-107,
https://hdl.handle.net/21.15107/rcub_vinar_1711 .

TY  - JOUR
AU  - Jovanović, Milan T.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1710
AB  - Since the introduction of nickel, cobalt and titanium-based alloys in the early 1950s, these materials in a relatively short time became backbone materials for the aerospace, energy, chemical industry and even medicine. The combination of excellent mechanical properties, corrosion resistance and bio-compatibility renders these alloys the best material choice for many critical applications. This review describes the results realized through the research in the Department of Materials Science in Vinca Institute. The emphasize was given to the relation between the microstructure and mechanical properties of conventionally cast nickel and cobalt-based superalloys, as well as directionally solidified and single crystal castings of nickel-based superalloys. The special attention was paid to the development of vacuum melting and casting technology for processing surgical implants made of a titanium-based alloy.
T2  - Metallurgical and Materials Engineering
T1  - Nickel, Cobalt and Titanium - Based Alloys - Fromaircraft Vehicles to Medical Applications
VL  - 22
IS  - 3
SP  - 205
EP  - 220
UR  - https://hdl.handle.net/21.15107/rcub_vinar_1710
ER  - 

@article{
author = "Jovanović, Milan T.",
year = "2016",
abstract = "Since the introduction of nickel, cobalt and titanium-based alloys in the early 1950s, these materials in a relatively short time became backbone materials for the aerospace, energy, chemical industry and even medicine. The combination of excellent mechanical properties, corrosion resistance and bio-compatibility renders these alloys the best material choice for many critical applications. This review describes the results realized through the research in the Department of Materials Science in Vinca Institute. The emphasize was given to the relation between the microstructure and mechanical properties of conventionally cast nickel and cobalt-based superalloys, as well as directionally solidified and single crystal castings of nickel-based superalloys. The special attention was paid to the development of vacuum melting and casting technology for processing surgical implants made of a titanium-based alloy.",
journal = "Metallurgical and Materials Engineering",
title = "Nickel, Cobalt and Titanium - Based Alloys - Fromaircraft Vehicles to Medical Applications",
volume = "22",
number = "3",
pages = "205-220",
url = "https://hdl.handle.net/21.15107/rcub_vinar_1710"
}

Jovanović, M. T.. (2016). Nickel, Cobalt and Titanium - Based Alloys - Fromaircraft Vehicles to Medical Applications. in Metallurgical and Materials Engineering, 22(3), 205-220.
https://hdl.handle.net/21.15107/rcub_vinar_1710

Jovanović MT. Nickel, Cobalt and Titanium - Based Alloys - Fromaircraft Vehicles to Medical Applications. in Metallurgical and Materials Engineering. 2016;22(3):205-220.
https://hdl.handle.net/21.15107/rcub_vinar_1710 .

Jovanović, Milan T., "Nickel, Cobalt and Titanium - Based Alloys - Fromaircraft Vehicles to Medical Applications" in Metallurgical and Materials Engineering, 22, no. 3 (2016):205-220,
https://hdl.handle.net/21.15107/rcub_vinar_1710 .

TY  - JOUR
AU  - Jovanović, Milan T.
AU  - Maksimović, Vesna
AU  - Cvijović-Alagić, Ivana
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1030
AB  - Jet engine turbine blade cast by investment precision casting of Ni-base superalloy, which failed during exploatation, was the subject of investigation. Failure analysis was executed applying optical microscopy (OM), transmission electron microscopy (TEM) using replica technique, scaning electron microscopy (SEM) and stress rupture life tests. On the ground of obtained results it was concluded that the failure occurred as a result of structural changes caused by turbine blade overheating above the exploitation temperature.
T2  - Metallurgical and Materials Engineering
T1  - Failure Analysis of Jet Engine Turbine Blade
VL  - 22
IS  - 1
SP  - 31
EP  - 37
DO  - 10.30544/138
ER  - 

@article{
author = "Jovanović, Milan T. and Maksimović, Vesna and Cvijović-Alagić, Ivana",
year = "2016",
abstract = "Jet engine turbine blade cast by investment precision casting of Ni-base superalloy, which failed during exploatation, was the subject of investigation. Failure analysis was executed applying optical microscopy (OM), transmission electron microscopy (TEM) using replica technique, scaning electron microscopy (SEM) and stress rupture life tests. On the ground of obtained results it was concluded that the failure occurred as a result of structural changes caused by turbine blade overheating above the exploitation temperature.",
journal = "Metallurgical and Materials Engineering",
title = "Failure Analysis of Jet Engine Turbine Blade",
volume = "22",
number = "1",
pages = "31-37",
doi = "10.30544/138"
}

Jovanović, M. T., Maksimović, V.,& Cvijović-Alagić, I.. (2016). Failure Analysis of Jet Engine Turbine Blade. in Metallurgical and Materials Engineering, 22(1), 31-37.
https://doi.org/10.30544/138

Jovanović MT, Maksimović V, Cvijović-Alagić I. Failure Analysis of Jet Engine Turbine Blade. in Metallurgical and Materials Engineering. 2016;22(1):31-37.
doi:10.30544/138 .

Jovanović, Milan T., Maksimović, Vesna, Cvijović-Alagić, Ivana, "Failure Analysis of Jet Engine Turbine Blade" in Metallurgical and Materials Engineering, 22, no. 1 (2016):31-37,
https://doi.org/10.30544/138 . .

TY  - CONF
AU  - Rajković, Višeslava M.
AU  - Božić, Dušan
AU  - Stašić, Jelena
AU  - Jovanović, Milan T.
AU  - Wang, Huaiwen
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7033
AB  - Copper matrix was simultaneously reinforced with nano- and micro-sized Al2O3 particles via high-energy milling of the mixture of inert gas-atomized prealloyed Cu-1 wt.% Al powder and 0.6 wt.% commercial Al2O3 powder. At the maximum of microhardness (2400 MPa) the grain size reaches the smallest value as a result of the synergetic effect of nano- and micro-sized Al2O3 particles. The relatively low decrease in microhardness during HTE may be explained by grain growth which is retarded by Al2O3 nano-sized particles precipitated at the grain boundaries.
T1  - Properties of Copper-Based Composite Reinforced with Al2O3 Particles of Different Size
VL  - 875-877
SP  - 318
EP  - +
DO  - 10.4028/www.scientific.net/AMR.875-877.318
ER  - 

@conference{
author = "Rajković, Višeslava M. and Božić, Dušan and Stašić, Jelena and Jovanović, Milan T. and Wang, Huaiwen",
year = "2014",
abstract = "Copper matrix was simultaneously reinforced with nano- and micro-sized Al2O3 particles via high-energy milling of the mixture of inert gas-atomized prealloyed Cu-1 wt.% Al powder and 0.6 wt.% commercial Al2O3 powder. At the maximum of microhardness (2400 MPa) the grain size reaches the smallest value as a result of the synergetic effect of nano- and micro-sized Al2O3 particles. The relatively low decrease in microhardness during HTE may be explained by grain growth which is retarded by Al2O3 nano-sized particles precipitated at the grain boundaries.",
title = "Properties of Copper-Based Composite Reinforced with Al2O3 Particles of Different Size",
volume = "875-877",
pages = "318-+",
doi = "10.4028/www.scientific.net/AMR.875-877.318"
}

Rajković, V. M., Božić, D., Stašić, J., Jovanović, M. T.,& Wang, H.. (2014). Properties of Copper-Based Composite Reinforced with Al2O3 Particles of Different Size. , 875-877, 318-+.
https://doi.org/10.4028/www.scientific.net/AMR.875-877.318

Rajković VM, Božić D, Stašić J, Jovanović MT, Wang H. Properties of Copper-Based Composite Reinforced with Al2O3 Particles of Different Size. 2014;875-877:318-+.
doi:10.4028/www.scientific.net/AMR.875-877.318 .

Rajković, Višeslava M., Božić, Dušan, Stašić, Jelena, Jovanović, Milan T., Wang, Huaiwen, "Properties of Copper-Based Composite Reinforced with Al2O3 Particles of Different Size", 875-877 (2014):318-+,
https://doi.org/10.4028/www.scientific.net/AMR.875-877.318 . .

TY  - JOUR
AU  - Rajković, Višeslava M.
AU  - Božić, Dušan
AU  - Stašić, Jelena
AU  - Wang, Huaiwen
AU  - Jovanović, Milan T.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/176
AB  - Copper-based composites strengthened by nano- and micro-sized alumina particles were fabricated by internal oxidation and mechanical alloying followed by hot-pressing. The effect of the simultaneous presence of nano- and micro-sized alumina particles on the microstructure and properties of the copper matrix was the object of this study. The inert gas-atomised prealloyed copper powder containing 0.5 wt.% Al and the mixture of inert gas-atomized prealloyed copper powder with 0.6 wt.% micro-sized alumina powder served as starting materials. Microstructure of composites was studied by X-ray diffraction analysis, scanning (SEM) and transmission electron microscopy (TEM). Microhardness, density and electrical conductivity were also applied for determination of properties. Microstructural characterization showed that nano-sized alumina particles significantly lower the grain size and inhibit the grain growth. Considerable increase of microhardness was also detected. At the maximum values (after 10 h of milling) the microhardness of both composites, Cu-0.5 wt.% Al and hybrid Cu-0.5 wt% Al + 0.6 wt.% Al2O3, was approximately 3 times higher than microhardness of non-milled compacts processed from prealloyed copper and electrolytic copper powders. Micro-sized alumina particles play a twofold role in the strengthening of the copper matrix of the hybrid composite: together with the nano-sized particles they strengthen the matrix at shorter milling time, but with prolonged milling time the dislocation substructure formed around coarse particles serves as a trigger for the start of recrystallization processes provoking a decrease of microhardness. Both composites exhibit a much higher thermal stability at 800 degrees C than copper alloy processed by the method of vacuum melting and casting. The contribution of individual mechanisms such as the grain size, thermal expansion mismatch and Orowan hardening in strengthening of composites was evaluated and correlated with experimental-results. (C) 2014 Elsevier B.V. All rights reserved.
T2  - Powder Technology
T1  - Processing, characterization and properties of copper-based composites strengthened by low amount of alumina particles
VL  - 268
SP  - 392
EP  - 400
DO  - 10.1016/j.powtec.2014.08.051
ER  - 

@article{
author = "Rajković, Višeslava M. and Božić, Dušan and Stašić, Jelena and Wang, Huaiwen and Jovanović, Milan T.",
year = "2014",
abstract = "Copper-based composites strengthened by nano- and micro-sized alumina particles were fabricated by internal oxidation and mechanical alloying followed by hot-pressing. The effect of the simultaneous presence of nano- and micro-sized alumina particles on the microstructure and properties of the copper matrix was the object of this study. The inert gas-atomised prealloyed copper powder containing 0.5 wt.% Al and the mixture of inert gas-atomized prealloyed copper powder with 0.6 wt.% micro-sized alumina powder served as starting materials. Microstructure of composites was studied by X-ray diffraction analysis, scanning (SEM) and transmission electron microscopy (TEM). Microhardness, density and electrical conductivity were also applied for determination of properties. Microstructural characterization showed that nano-sized alumina particles significantly lower the grain size and inhibit the grain growth. Considerable increase of microhardness was also detected. At the maximum values (after 10 h of milling) the microhardness of both composites, Cu-0.5 wt.% Al and hybrid Cu-0.5 wt% Al + 0.6 wt.% Al2O3, was approximately 3 times higher than microhardness of non-milled compacts processed from prealloyed copper and electrolytic copper powders. Micro-sized alumina particles play a twofold role in the strengthening of the copper matrix of the hybrid composite: together with the nano-sized particles they strengthen the matrix at shorter milling time, but with prolonged milling time the dislocation substructure formed around coarse particles serves as a trigger for the start of recrystallization processes provoking a decrease of microhardness. Both composites exhibit a much higher thermal stability at 800 degrees C than copper alloy processed by the method of vacuum melting and casting. The contribution of individual mechanisms such as the grain size, thermal expansion mismatch and Orowan hardening in strengthening of composites was evaluated and correlated with experimental-results. (C) 2014 Elsevier B.V. All rights reserved.",
journal = "Powder Technology",
title = "Processing, characterization and properties of copper-based composites strengthened by low amount of alumina particles",
volume = "268",
pages = "392-400",
doi = "10.1016/j.powtec.2014.08.051"
}

Rajković, V. M., Božić, D., Stašić, J., Wang, H.,& Jovanović, M. T.. (2014). Processing, characterization and properties of copper-based composites strengthened by low amount of alumina particles. in Powder Technology, 268, 392-400.
https://doi.org/10.1016/j.powtec.2014.08.051

Rajković VM, Božić D, Stašić J, Wang H, Jovanović MT. Processing, characterization and properties of copper-based composites strengthened by low amount of alumina particles. in Powder Technology. 2014;268:392-400.
doi:10.1016/j.powtec.2014.08.051 .

Rajković, Višeslava M., Božić, Dušan, Stašić, Jelena, Wang, Huaiwen, Jovanović, Milan T., "Processing, characterization and properties of copper-based composites strengthened by low amount of alumina particles" in Powder Technology, 268 (2014):392-400,
https://doi.org/10.1016/j.powtec.2014.08.051 . .

TY  - JOUR
AU  - Vencl, Aleksandar
AU  - Rajković, Višeslava M.
AU  - Živić, Fatima
AU  - Mitrovic, Slobodan
AU  - Cvijović-Alagić, Ivana
AU  - Jovanović, Milan T.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5566
AB  - Three copper-based alloys, i.e. two composites reinforced with Al2O3 particles and fabricated through PM route and Cu-Cr-Zr alloy processed by the vacuum melting and casting technique were the object of this investigation. Light microscope, scanning electron microscope (SEM) equipped with electron X-ray spectrometer (EDS) and transmission electron microscope (TEM) were used for microstructural characterization. The ball-on-disc nanotribometer served for wear and friction tests applying low sliding speeds (6, 8 and 10 mm/s) at constant load (1 N). The objective of the paper was to investigate the effect of different processing techniques on microstructure, thermal stability and the tribological characteristics of composites and copper ingot alloy. Nano-sized Al2O3 particles (less than 100 nm in size) are present not only in the copper matrix of Cu-2.5 wt.% Al composite, obtained by internal oxidation, but they are also formed at the grain boundaries preventing the grain growth and providing very small grain size. During the high temperature annealing (in the range 300-950 degrees C) composites behaved much better than the ingot alloy. The highest thermal stability showed Cu-2.5 wt.% Al composite. The pinning effect of nano-sized Al2O3 particles prevents the grain growth slowing down recrystallization of this composite up to 900 degrees C. Micro-sized Al2O3 particles in Cu-5 wt.% Al2O3 composite, processed by mechanical annealing, are not effective in preventing dislocation motion and the grain growth, whereas microstructure of Cu-0.4 wt.% Cr-0.08 wt.% Zr ingot alloy was completely recrystallized around 550 degrees C. Cu-2.5 wt.% Al composite showed the best wear resistance, approximately 2.5 times higher than that of Cu-5 wt.% Al2O3 composite. High hardness and nano-sized Al2O3 particles size combined with the fine-grain structure are the main parameters leading to the improved wear resistance of the Cu-2.5Al composite. (C) 2013 Elsevier B.V. All rights reserved.
T2  - Applied Surface Science
T1  - The effect of processing techniques on microstructural and tribological properties of copper-based alloys
VL  - 280
SP  - 646
EP  - 654
DO  - 10.1016/j.apsusc.2013.05.039
ER  - 

@article{
author = "Vencl, Aleksandar and Rajković, Višeslava M. and Živić, Fatima and Mitrovic, Slobodan and Cvijović-Alagić, Ivana and Jovanović, Milan T.",
year = "2013",
abstract = "Three copper-based alloys, i.e. two composites reinforced with Al2O3 particles and fabricated through PM route and Cu-Cr-Zr alloy processed by the vacuum melting and casting technique were the object of this investigation. Light microscope, scanning electron microscope (SEM) equipped with electron X-ray spectrometer (EDS) and transmission electron microscope (TEM) were used for microstructural characterization. The ball-on-disc nanotribometer served for wear and friction tests applying low sliding speeds (6, 8 and 10 mm/s) at constant load (1 N). The objective of the paper was to investigate the effect of different processing techniques on microstructure, thermal stability and the tribological characteristics of composites and copper ingot alloy. Nano-sized Al2O3 particles (less than 100 nm in size) are present not only in the copper matrix of Cu-2.5 wt.% Al composite, obtained by internal oxidation, but they are also formed at the grain boundaries preventing the grain growth and providing very small grain size. During the high temperature annealing (in the range 300-950 degrees C) composites behaved much better than the ingot alloy. The highest thermal stability showed Cu-2.5 wt.% Al composite. The pinning effect of nano-sized Al2O3 particles prevents the grain growth slowing down recrystallization of this composite up to 900 degrees C. Micro-sized Al2O3 particles in Cu-5 wt.% Al2O3 composite, processed by mechanical annealing, are not effective in preventing dislocation motion and the grain growth, whereas microstructure of Cu-0.4 wt.% Cr-0.08 wt.% Zr ingot alloy was completely recrystallized around 550 degrees C. Cu-2.5 wt.% Al composite showed the best wear resistance, approximately 2.5 times higher than that of Cu-5 wt.% Al2O3 composite. High hardness and nano-sized Al2O3 particles size combined with the fine-grain structure are the main parameters leading to the improved wear resistance of the Cu-2.5Al composite. (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Applied Surface Science",
title = "The effect of processing techniques on microstructural and tribological properties of copper-based alloys",
volume = "280",
pages = "646-654",
doi = "10.1016/j.apsusc.2013.05.039"
}

Vencl, A., Rajković, V. M., Živić, F., Mitrovic, S., Cvijović-Alagić, I.,& Jovanović, M. T.. (2013). The effect of processing techniques on microstructural and tribological properties of copper-based alloys. in Applied Surface Science, 280, 646-654.
https://doi.org/10.1016/j.apsusc.2013.05.039

Vencl A, Rajković VM, Živić F, Mitrovic S, Cvijović-Alagić I, Jovanović MT. The effect of processing techniques on microstructural and tribological properties of copper-based alloys. in Applied Surface Science. 2013;280:646-654.
doi:10.1016/j.apsusc.2013.05.039 .

Vencl, Aleksandar, Rajković, Višeslava M., Živić, Fatima, Mitrovic, Slobodan, Cvijović-Alagić, Ivana, Jovanović, Milan T., "The effect of processing techniques on microstructural and tribological properties of copper-based alloys" in Applied Surface Science, 280 (2013):646-654,
https://doi.org/10.1016/j.apsusc.2013.05.039 . .

TY  - JOUR
AU  - Rajković, Višeslava M.
AU  - Božić, Dušan
AU  - Devečerski, Aleksandar
AU  - Jovanović, Milan T.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4833
AB  - The effect of the simultaneous presence of nano- and micro-sized Al2O3 particles on the microstructure and properties of copper matrix was the object of this study. The mixture of inert gas-atomized prealloyed copper powder (with 1 wt.% Al) and 0.6 wt.% commercial Al2O3 powder (serving as micro-sized particles) was used as the starting materials. Strengthening of the copper matrix was performed by treating the powders in the air for up to 20 h in the planetary ball mill. During milling of the prealloyed powder, finely dispersed nano-sized Al2O3 particles were formed in situ by internal oxidation. The approximate size of these particles was between 30 and 60 nm. The highest values of microhardness were reached in compacts processed from 10 h-milled powders. The microhardness of compact obtained from 10 h-milled powder was 3 times higher than the microhardness of compact processed from as-received and non-milled prealloyed powder. At the maximum microhardness the grain size reaches the smallest value as a result of the synergetic effect of nano- and micro-sized Al2O3 particles. Recrystallization, which occurred during prolonged milling, was the main factor influencing the decrease in microhardness. The increase in electrical conductivity of compacts after 15 h of milling is the result of the decrease in microhardness and activated recrystallization processes. (C) 2012 Elsevier Inc. All rights reserved.
T2  - Materials Characterization
T1  - Characteristic of copper matrix simultaneously reinforced with nano- and micro-sized Al2O3 particles
VL  - 67
SP  - 129
EP  - 137
DO  - 10.1016/j.matchar.2012.02.022
ER  - 

@article{
author = "Rajković, Višeslava M. and Božić, Dušan and Devečerski, Aleksandar and Jovanović, Milan T.",
year = "2012",
abstract = "The effect of the simultaneous presence of nano- and micro-sized Al2O3 particles on the microstructure and properties of copper matrix was the object of this study. The mixture of inert gas-atomized prealloyed copper powder (with 1 wt.% Al) and 0.6 wt.% commercial Al2O3 powder (serving as micro-sized particles) was used as the starting materials. Strengthening of the copper matrix was performed by treating the powders in the air for up to 20 h in the planetary ball mill. During milling of the prealloyed powder, finely dispersed nano-sized Al2O3 particles were formed in situ by internal oxidation. The approximate size of these particles was between 30 and 60 nm. The highest values of microhardness were reached in compacts processed from 10 h-milled powders. The microhardness of compact obtained from 10 h-milled powder was 3 times higher than the microhardness of compact processed from as-received and non-milled prealloyed powder. At the maximum microhardness the grain size reaches the smallest value as a result of the synergetic effect of nano- and micro-sized Al2O3 particles. Recrystallization, which occurred during prolonged milling, was the main factor influencing the decrease in microhardness. The increase in electrical conductivity of compacts after 15 h of milling is the result of the decrease in microhardness and activated recrystallization processes. (C) 2012 Elsevier Inc. All rights reserved.",
journal = "Materials Characterization",
title = "Characteristic of copper matrix simultaneously reinforced with nano- and micro-sized Al2O3 particles",
volume = "67",
pages = "129-137",
doi = "10.1016/j.matchar.2012.02.022"
}

Rajković, V. M., Božić, D., Devečerski, A.,& Jovanović, M. T.. (2012). Characteristic of copper matrix simultaneously reinforced with nano- and micro-sized Al2O3 particles. in Materials Characterization, 67, 129-137.
https://doi.org/10.1016/j.matchar.2012.02.022

Rajković VM, Božić D, Devečerski A, Jovanović MT. Characteristic of copper matrix simultaneously reinforced with nano- and micro-sized Al2O3 particles. in Materials Characterization. 2012;67:129-137.
doi:10.1016/j.matchar.2012.02.022 .

Rajković, Višeslava M., Božić, Dušan, Devečerski, Aleksandar, Jovanović, Milan T., "Characteristic of copper matrix simultaneously reinforced with nano- and micro-sized Al2O3 particles" in Materials Characterization, 67 (2012):129-137,
https://doi.org/10.1016/j.matchar.2012.02.022 . .

TY  - JOUR
AU  - Božić, Dušan
AU  - Rajković, Višeslava M.
AU  - Jovanović, Milan T.
AU  - Dimčić, Biljana
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4258
AB  - Compacts of Ti-6Al-4V alloy were produced via the powder metallurgy technique applying the hydride-dehydride process and hot isostatic pressing. The conditions of reversible hydride-dehydride process were controlled by chemical and X-ray diffraction analysis and scanning electron microscopy. Powders were pressed above and below the alpha - GT beta transus temperature. The presence of titanium hydrides and morphology of the microstructure have the direct influence on the tensile properties and fracture toughness of the Ti-6Al-4V alloy, but the effect of microstructure is more pronounced.
T2  - Powder Metallurgy
T1  - Influence of retained hydride particles and microstructure on mechanical properties of PM produced Ti-6Al-4V alloy
VL  - 54
IS  - 1
SP  - 40
EP  - 45
DO  - 10.1179/174329009X409606
ER  - 

@article{
author = "Božić, Dušan and Rajković, Višeslava M. and Jovanović, Milan T. and Dimčić, Biljana",
year = "2011",
abstract = "Compacts of Ti-6Al-4V alloy were produced via the powder metallurgy technique applying the hydride-dehydride process and hot isostatic pressing. The conditions of reversible hydride-dehydride process were controlled by chemical and X-ray diffraction analysis and scanning electron microscopy. Powders were pressed above and below the alpha - GT beta transus temperature. The presence of titanium hydrides and morphology of the microstructure have the direct influence on the tensile properties and fracture toughness of the Ti-6Al-4V alloy, but the effect of microstructure is more pronounced.",
journal = "Powder Metallurgy",
title = "Influence of retained hydride particles and microstructure on mechanical properties of PM produced Ti-6Al-4V alloy",
volume = "54",
number = "1",
pages = "40-45",
doi = "10.1179/174329009X409606"
}

Božić, D., Rajković, V. M., Jovanović, M. T.,& Dimčić, B.. (2011). Influence of retained hydride particles and microstructure on mechanical properties of PM produced Ti-6Al-4V alloy. in Powder Metallurgy, 54(1), 40-45.
https://doi.org/10.1179/174329009X409606

Božić D, Rajković VM, Jovanović MT, Dimčić B. Influence of retained hydride particles and microstructure on mechanical properties of PM produced Ti-6Al-4V alloy. in Powder Metallurgy. 2011;54(1):40-45.
doi:10.1179/174329009X409606 .

Božić, Dušan, Rajković, Višeslava M., Jovanović, Milan T., Dimčić, Biljana, "Influence of retained hydride particles and microstructure on mechanical properties of PM produced Ti-6Al-4V alloy" in Powder Metallurgy, 54, no. 1 (2011):40-45,
https://doi.org/10.1179/174329009X409606 . .

TY  - JOUR
AU  - Rajković, Višeslava M.
AU  - Božić, Dušan
AU  - Jovanović, Milan T.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3889
AB  - High-energy milling was used for production of Cu-Al2O3 composites. The inert gas-atomized prealloyed copper powder containing 2 wt.%Al and the mixture of the different sized electrolytic copper powders with 4 wt.% commercial Al2O3 powders served as starting materials. Milling of prealloyed copper powders promotes formation of nano-sized Al2O3 particles by internal oxidation with oxygen from air. Hot-pressed compacts of composites obtained from 5 and 20 h milled powders were additionally subjected to the high-temperature exposure in argon at 800 degrees C for 1 and 5 h. Characterization of processed material was performed by optical and scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), microhardness, as well as density and electrical conductivity measurements. Due to nano-sized Al2O3 particles microhardness and thermal stability of composite processed from milled prealloyed powders are higher than corresponding properties of composites processed from the milled powder mixtures. The results were discussed in terms of the effects of different size of starting copper powders and Al2O3 particles on the structure, strengthening of copper matrix, thermal stability and electrical conductivity of Cu-Al2O3 composites. (C) 2009 Elsevier Ltd. All rights reserved.
T2  - Materials and Design
T1  - Effects of copper and Al2O3 particles on characteristics of Cu-Al2O3 composites
VL  - 31
IS  - 4
SP  - 1962
EP  - 1970
DO  - 10.1016/j.matdes.2009.10.037
ER  - 

@article{
author = "Rajković, Višeslava M. and Božić, Dušan and Jovanović, Milan T.",
year = "2010",
abstract = "High-energy milling was used for production of Cu-Al2O3 composites. The inert gas-atomized prealloyed copper powder containing 2 wt.%Al and the mixture of the different sized electrolytic copper powders with 4 wt.% commercial Al2O3 powders served as starting materials. Milling of prealloyed copper powders promotes formation of nano-sized Al2O3 particles by internal oxidation with oxygen from air. Hot-pressed compacts of composites obtained from 5 and 20 h milled powders were additionally subjected to the high-temperature exposure in argon at 800 degrees C for 1 and 5 h. Characterization of processed material was performed by optical and scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), microhardness, as well as density and electrical conductivity measurements. Due to nano-sized Al2O3 particles microhardness and thermal stability of composite processed from milled prealloyed powders are higher than corresponding properties of composites processed from the milled powder mixtures. The results were discussed in terms of the effects of different size of starting copper powders and Al2O3 particles on the structure, strengthening of copper matrix, thermal stability and electrical conductivity of Cu-Al2O3 composites. (C) 2009 Elsevier Ltd. All rights reserved.",
journal = "Materials and Design",
title = "Effects of copper and Al2O3 particles on characteristics of Cu-Al2O3 composites",
volume = "31",
number = "4",
pages = "1962-1970",
doi = "10.1016/j.matdes.2009.10.037"
}

Rajković, V. M., Božić, D.,& Jovanović, M. T.. (2010). Effects of copper and Al2O3 particles on characteristics of Cu-Al2O3 composites. in Materials and Design, 31(4), 1962-1970.
https://doi.org/10.1016/j.matdes.2009.10.037

Rajković VM, Božić D, Jovanović MT. Effects of copper and Al2O3 particles on characteristics of Cu-Al2O3 composites. in Materials and Design. 2010;31(4):1962-1970.
doi:10.1016/j.matdes.2009.10.037 .

Rajković, Višeslava M., Božić, Dušan, Jovanović, Milan T., "Effects of copper and Al2O3 particles on characteristics of Cu-Al2O3 composites" in Materials and Design, 31, no. 4 (2010):1962-1970,
https://doi.org/10.1016/j.matdes.2009.10.037 . .

TY  - JOUR
AU  - Rajković, Višeslava M.
AU  - Božić, Dušan
AU  - Jovanović, Milan T.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3976
AB  - Electrolytic copper powder, inert gas atomized prealloyed copper powder containing 3.5 wt.% Al, and a mixture of copper and commercial Al2O3 powder particles (4 wt.% Al2O3) were milled separately in a high-energy planetary ball mill for up to 20 h in air. The milling was performed in order to strengthen the copper matrix by grain size refinement and Al2O3 particles. Milling, in air of prealloyed copper powder promoted formation of fine dispersed Al2O3 particles by internal oxidation. Hot-pressing (800 degrees C for 3 h in argon at a pressure of 35 MPa) was used for compaction of milled powders. Compacts from 5 and 20 h milled powders were additionally subjected to high temperature exposure (800 degrees C for 1 and 5 h in argon) in order to examine their thermal stability and electrical conductivity. The effect of different size and the amount of Al2O3 particles on strengthening, thermal stability and electrical conductivity of the copper-based composites was studied. The results were discussed in terms of the effects of the grain size refinement along with micro- and nano-sized Al2O3 particles on the strengthening of the copper matrix.
T2  - International Journal of Materials Research
T1  - Properties of copper composites strengthened by nano- and micro-sized Al2O3 particles
VL  - 101
IS  - 3
SP  - 334
EP  - 339
DO  - 10.3139/146.110278
ER  - 

@article{
author = "Rajković, Višeslava M. and Božić, Dušan and Jovanović, Milan T.",
year = "2010",
abstract = "Electrolytic copper powder, inert gas atomized prealloyed copper powder containing 3.5 wt.% Al, and a mixture of copper and commercial Al2O3 powder particles (4 wt.% Al2O3) were milled separately in a high-energy planetary ball mill for up to 20 h in air. The milling was performed in order to strengthen the copper matrix by grain size refinement and Al2O3 particles. Milling, in air of prealloyed copper powder promoted formation of fine dispersed Al2O3 particles by internal oxidation. Hot-pressing (800 degrees C for 3 h in argon at a pressure of 35 MPa) was used for compaction of milled powders. Compacts from 5 and 20 h milled powders were additionally subjected to high temperature exposure (800 degrees C for 1 and 5 h in argon) in order to examine their thermal stability and electrical conductivity. The effect of different size and the amount of Al2O3 particles on strengthening, thermal stability and electrical conductivity of the copper-based composites was studied. The results were discussed in terms of the effects of the grain size refinement along with micro- and nano-sized Al2O3 particles on the strengthening of the copper matrix.",
journal = "International Journal of Materials Research",
title = "Properties of copper composites strengthened by nano- and micro-sized Al2O3 particles",
volume = "101",
number = "3",
pages = "334-339",
doi = "10.3139/146.110278"
}

Rajković, V. M., Božić, D.,& Jovanović, M. T.. (2010). Properties of copper composites strengthened by nano- and micro-sized Al2O3 particles. in International Journal of Materials Research, 101(3), 334-339.
https://doi.org/10.3139/146.110278

Rajković VM, Božić D, Jovanović MT. Properties of copper composites strengthened by nano- and micro-sized Al2O3 particles. in International Journal of Materials Research. 2010;101(3):334-339.
doi:10.3139/146.110278 .

Rajković, Višeslava M., Božić, Dušan, Jovanović, Milan T., "Properties of copper composites strengthened by nano- and micro-sized Al2O3 particles" in International Journal of Materials Research, 101, no. 3 (2010):334-339,
https://doi.org/10.3139/146.110278 . .

TY  - JOUR
AU  - Rajković, Višeslava M.
AU  - Božić, Dušan
AU  - Devečerski, Aleksandar
AU  - Bojanic, S.
AU  - Jovanović, Milan T.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4311
AB  - The objective of the work is to study the effects of the high-energy milling on strengthening, thermal stability and electrical conductivity of Cu-Al2O3 composite. The prealloyed copper powders, atomized in inert gas and containing 3 wt. % Al, were milled up to 20 h in the planetary ball mill to oxidize in situ aluminium with oxygen from the air. Composite compacts were obtained by hot-pressing in an argon atmosphere at 800 degrees C for 3 h under the pressure of 35 MPa. The microstructural characterization was performed by the optical microscope, scanning electron microscope (SEM), transmission electron microscope (TEM) and X-ray diffraction analysis (XRD). The microhardness, electrical conductivity and density measurements were also carried out. The effect of internal oxidation and high-energy milling on strengthening of Cu-Al2O3 composite was significant, The increase of the microhardness of composite compacts (292 HV) is almost threefold comparing to compacts processed from the as-received Cu-3 wt. % Al powder (102 HV). The grain size of Cu-Al2O3 compacts processed from 5 and 20 h-milled powders was 75 and 45 nm, respectively. The small increase in the grain size and the small microhardness drop indicate the high thermal stability of Cu-Al2O3 composite during high-temperature exposure at 800 degrees C.
T2  - Revista de Metalurgia
T1  - Strength and thermal stability of Cu-Al2O3 composite obtained by internal oxidation
VL  - 46
IS  - 6
SP  - 520
EP  - 529
DO  - 10.3989/revmetalmadrid.1024
ER  - 

@article{
author = "Rajković, Višeslava M. and Božić, Dušan and Devečerski, Aleksandar and Bojanic, S. and Jovanović, Milan T.",
year = "2010",
abstract = "The objective of the work is to study the effects of the high-energy milling on strengthening, thermal stability and electrical conductivity of Cu-Al2O3 composite. The prealloyed copper powders, atomized in inert gas and containing 3 wt. % Al, were milled up to 20 h in the planetary ball mill to oxidize in situ aluminium with oxygen from the air. Composite compacts were obtained by hot-pressing in an argon atmosphere at 800 degrees C for 3 h under the pressure of 35 MPa. The microstructural characterization was performed by the optical microscope, scanning electron microscope (SEM), transmission electron microscope (TEM) and X-ray diffraction analysis (XRD). The microhardness, electrical conductivity and density measurements were also carried out. The effect of internal oxidation and high-energy milling on strengthening of Cu-Al2O3 composite was significant, The increase of the microhardness of composite compacts (292 HV) is almost threefold comparing to compacts processed from the as-received Cu-3 wt. % Al powder (102 HV). The grain size of Cu-Al2O3 compacts processed from 5 and 20 h-milled powders was 75 and 45 nm, respectively. The small increase in the grain size and the small microhardness drop indicate the high thermal stability of Cu-Al2O3 composite during high-temperature exposure at 800 degrees C.",
journal = "Revista de Metalurgia",
title = "Strength and thermal stability of Cu-Al2O3 composite obtained by internal oxidation",
volume = "46",
number = "6",
pages = "520-529",
doi = "10.3989/revmetalmadrid.1024"
}

Rajković, V. M., Božić, D., Devečerski, A., Bojanic, S.,& Jovanović, M. T.. (2010). Strength and thermal stability of Cu-Al2O3 composite obtained by internal oxidation. in Revista de Metalurgia, 46(6), 520-529.
https://doi.org/10.3989/revmetalmadrid.1024

Rajković VM, Božić D, Devečerski A, Bojanic S, Jovanović MT. Strength and thermal stability of Cu-Al2O3 composite obtained by internal oxidation. in Revista de Metalurgia. 2010;46(6):520-529.
doi:10.3989/revmetalmadrid.1024 .

Rajković, Višeslava M., Božić, Dušan, Devečerski, Aleksandar, Bojanic, S., Jovanović, Milan T., "Strength and thermal stability of Cu-Al2O3 composite obtained by internal oxidation" in Revista de Metalurgia, 46, no. 6 (2010):520-529,
https://doi.org/10.3989/revmetalmadrid.1024 . .

TY  - JOUR
AU  - Bobić, Biljana M.
AU  - Babić, Miroslav
AU  - Mitrovic, Slobodan
AU  - Ilić, Nenad
AU  - Bobić, Ilija
AU  - Jovanović, Milan T.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4183
AB  - Microstructures and compressive properties of Zn25Al3Cu alloy and Zn25Al3Cu/Al2O3 particulate composites with large reinforcing particles (250 mu m) were examined. The composites were obtained by the compocasting technique through infiltration of 3, 8 and 16 wt.% Al2O3 particles into the semi-solid metal matrix. The influence of temperature in the range from 70 to 170 degrees C on compressive yield strength of the matrix alloy (as-cast and thixocast Zn25Al3Cu alloy) and the composites was investigated. Above 70 degrees C compressive yield strength of all materials decreases, but the rate of decrease is different for the matrix alloy (as-cast and thixocast) and composites. It was found that the abrupt decrease in compressive yield strength of the matrix alloy occurred at temperatures higher than 70 degrees C, whereas composites retained relatively high values of compressive yield strength till the end of the testing temperature range regardless of the amount of reinforcing particles.
T2  - International Journal of Materials Research
T1  - Microstructure and mechanical properties of Zn25Al3Cu based composites with large Al2O3 particles at room and elevated temperatures
VL  - 101
IS  - 12
SP  - 1524
EP  - 1531
DO  - 10.3139/146.110425
ER  - 

@article{
author = "Bobić, Biljana M. and Babić, Miroslav and Mitrovic, Slobodan and Ilić, Nenad and Bobić, Ilija and Jovanović, Milan T.",
year = "2010",
abstract = "Microstructures and compressive properties of Zn25Al3Cu alloy and Zn25Al3Cu/Al2O3 particulate composites with large reinforcing particles (250 mu m) were examined. The composites were obtained by the compocasting technique through infiltration of 3, 8 and 16 wt.% Al2O3 particles into the semi-solid metal matrix. The influence of temperature in the range from 70 to 170 degrees C on compressive yield strength of the matrix alloy (as-cast and thixocast Zn25Al3Cu alloy) and the composites was investigated. Above 70 degrees C compressive yield strength of all materials decreases, but the rate of decrease is different for the matrix alloy (as-cast and thixocast) and composites. It was found that the abrupt decrease in compressive yield strength of the matrix alloy occurred at temperatures higher than 70 degrees C, whereas composites retained relatively high values of compressive yield strength till the end of the testing temperature range regardless of the amount of reinforcing particles.",
journal = "International Journal of Materials Research",
title = "Microstructure and mechanical properties of Zn25Al3Cu based composites with large Al2O3 particles at room and elevated temperatures",
volume = "101",
number = "12",
pages = "1524-1531",
doi = "10.3139/146.110425"
}

Bobić, B. M., Babić, M., Mitrovic, S., Ilić, N., Bobić, I.,& Jovanović, M. T.. (2010). Microstructure and mechanical properties of Zn25Al3Cu based composites with large Al2O3 particles at room and elevated temperatures. in International Journal of Materials Research, 101(12), 1524-1531.
https://doi.org/10.3139/146.110425

Bobić BM, Babić M, Mitrovic S, Ilić N, Bobić I, Jovanović MT. Microstructure and mechanical properties of Zn25Al3Cu based composites with large Al2O3 particles at room and elevated temperatures. in International Journal of Materials Research. 2010;101(12):1524-1531.
doi:10.3139/146.110425 .

Bobić, Biljana M., Babić, Miroslav, Mitrovic, Slobodan, Ilić, Nenad, Bobić, Ilija, Jovanović, Milan T., "Microstructure and mechanical properties of Zn25Al3Cu based composites with large Al2O3 particles at room and elevated temperatures" in International Journal of Materials Research, 101, no. 12 (2010):1524-1531,
https://doi.org/10.3139/146.110425 . .

TY  - JOUR
AU  - Rajković, Višeslava M.
AU  - Božić, Dušan
AU  - Jovanović, Milan T.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3716
AB  - The powder Cu-Al2O3 composites were produced by high-energy milling. Various combinations of particle size and mixtures and approximately constant amount of Al2O3 were used as the starting materials. These powders were separately milled in air for up to 20 h in a planetary ball mill. The copper matrix was reinforced by internal oxidation and mechanical alloying. During the milling, internal oxidation of pre-alloyed Cu-2 mass %-Al powder generated 3.7 mass % Al2O3 nano-sized particles finely dispersed in the copper matrix. The effect of different size of the starting copper and Al2O3 powder particles on the lattice parameter, lattice distortion and grain size, as well as on the size, morphology and microstructure of the Cu-Al2O3 composite powder particles was studied.
T2  - Journal of the Serbian Chemical Society
T1  - Characteristics of Cu-Al2O3 composites of various starting particle size obtained by high-energy milling
VL  - 74
IS  - 5
SP  - 595
EP  - 605
DO  - 10.2298/JSC0905595R
ER  - 

@article{
author = "Rajković, Višeslava M. and Božić, Dušan and Jovanović, Milan T.",
year = "2009",
abstract = "The powder Cu-Al2O3 composites were produced by high-energy milling. Various combinations of particle size and mixtures and approximately constant amount of Al2O3 were used as the starting materials. These powders were separately milled in air for up to 20 h in a planetary ball mill. The copper matrix was reinforced by internal oxidation and mechanical alloying. During the milling, internal oxidation of pre-alloyed Cu-2 mass %-Al powder generated 3.7 mass % Al2O3 nano-sized particles finely dispersed in the copper matrix. The effect of different size of the starting copper and Al2O3 powder particles on the lattice parameter, lattice distortion and grain size, as well as on the size, morphology and microstructure of the Cu-Al2O3 composite powder particles was studied.",
journal = "Journal of the Serbian Chemical Society",
title = "Characteristics of Cu-Al2O3 composites of various starting particle size obtained by high-energy milling",
volume = "74",
number = "5",
pages = "595-605",
doi = "10.2298/JSC0905595R"
}

Rajković, V. M., Božić, D.,& Jovanović, M. T.. (2009). Characteristics of Cu-Al2O3 composites of various starting particle size obtained by high-energy milling. in Journal of the Serbian Chemical Society, 74(5), 595-605.
https://doi.org/10.2298/JSC0905595R

Rajković VM, Božić D, Jovanović MT. Characteristics of Cu-Al2O3 composites of various starting particle size obtained by high-energy milling. in Journal of the Serbian Chemical Society. 2009;74(5):595-605.
doi:10.2298/JSC0905595R .

Rajković, Višeslava M., Božić, Dušan, Jovanović, Milan T., "Characteristics of Cu-Al2O3 composites of various starting particle size obtained by high-energy milling" in Journal of the Serbian Chemical Society, 74, no. 5 (2009):595-605,
https://doi.org/10.2298/JSC0905595R . .

TY  - JOUR
AU  - Rajković, Višeslava M.
AU  - Božić, Dušan
AU  - Popović, Miljana
AU  - Jovanović, Milan T.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3260
AB  - Inert gas atomized prealloyed copper powder containing 2 wt.% Al (average particle size approximate to 30 mu m) and a mixture consisting of copper (average particle sizes approximate to 15 mu m and 30 mu m) and 4 wt.% of commercial Al2O3 powder particles (average particle size approximate to 0.75 mu m) were milled separately in a high-energy planetary ball mill up to 20 h in air. Milling was performed in order to strengthen the copper matrix by grain size refinement and Al2O3 particles. Milling in air of prealloyed copper powder promoted formation of finely dispersed nano-sized Al2O3 particles by internal oxidation. On the other side, composite powders with commercial micro-sized Al2O3 particles were obtained by mechanical alloying. Following milling, powders were treated in hydrogen at 400 degrees C for 1h in order to eliminate copper oxides formed on their surface during milling. Hot pressing (800 degrees C for 3 h in argon at pressure of 35 MPa) was used for compaction of milled powders. Hot pressed composite compacts processed from 5 and 20 h milled powders were additionally subjected to high temperature exposure (800 degrees C for 1 and 5 h in argon) in order to examine their thermal stability. The results were discussed in terms of the effects of different size of starting powders, the grain size refinement and different size of Al2O3 particles on strengthening, thermal stability and electrical conductivity of copper-based composites.
T2  - Science of Sintering
T1  - The Influence of Powder Particle Size on Properties of Cu-Al2O3 Composites
VL  - 41
IS  - 2
SP  - 185
EP  - 192
DO  - 10.2298/SOS0902185R
ER  - 

@article{
author = "Rajković, Višeslava M. and Božić, Dušan and Popović, Miljana and Jovanović, Milan T.",
year = "2009",
abstract = "Inert gas atomized prealloyed copper powder containing 2 wt.% Al (average particle size approximate to 30 mu m) and a mixture consisting of copper (average particle sizes approximate to 15 mu m and 30 mu m) and 4 wt.% of commercial Al2O3 powder particles (average particle size approximate to 0.75 mu m) were milled separately in a high-energy planetary ball mill up to 20 h in air. Milling was performed in order to strengthen the copper matrix by grain size refinement and Al2O3 particles. Milling in air of prealloyed copper powder promoted formation of finely dispersed nano-sized Al2O3 particles by internal oxidation. On the other side, composite powders with commercial micro-sized Al2O3 particles were obtained by mechanical alloying. Following milling, powders were treated in hydrogen at 400 degrees C for 1h in order to eliminate copper oxides formed on their surface during milling. Hot pressing (800 degrees C for 3 h in argon at pressure of 35 MPa) was used for compaction of milled powders. Hot pressed composite compacts processed from 5 and 20 h milled powders were additionally subjected to high temperature exposure (800 degrees C for 1 and 5 h in argon) in order to examine their thermal stability. The results were discussed in terms of the effects of different size of starting powders, the grain size refinement and different size of Al2O3 particles on strengthening, thermal stability and electrical conductivity of copper-based composites.",
journal = "Science of Sintering",
title = "The Influence of Powder Particle Size on Properties of Cu-Al2O3 Composites",
volume = "41",
number = "2",
pages = "185-192",
doi = "10.2298/SOS0902185R"
}

Rajković, V. M., Božić, D., Popović, M.,& Jovanović, M. T.. (2009). The Influence of Powder Particle Size on Properties of Cu-Al2O3 Composites. in Science of Sintering, 41(2), 185-192.
https://doi.org/10.2298/SOS0902185R

Rajković VM, Božić D, Popović M, Jovanović MT. The Influence of Powder Particle Size on Properties of Cu-Al2O3 Composites. in Science of Sintering. 2009;41(2):185-192.
doi:10.2298/SOS0902185R .

Rajković, Višeslava M., Božić, Dušan, Popović, Miljana, Jovanović, Milan T., "The Influence of Powder Particle Size on Properties of Cu-Al2O3 Composites" in Science of Sintering, 41, no. 2 (2009):185-192,
https://doi.org/10.2298/SOS0902185R . .

TY  - JOUR
AU  - Božić, Dušan
AU  - Sekulić, Danijela R.
AU  - Stašić, Jelena
AU  - Rajković, Višeslava M.
AU  - Jovanović, Milan T.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3587
AB  - Low cost titanium alloy compacts were produced via the powder metallurgy approach through the hydride-dehydride process and hot consolidation (hot pressing and hot isostatic pressing). The conditions of the reversible hydride-dehydride process were determined by X-ray and scanning electron microscopy characterisation of powders. Powders were consolidated both above and below the beta transformation temperature. The morphology of the microstructure, and the presence of open and closed pores, its well as residual particles of hydrides and oxides have a direct influence on the mechanical properties of compacts (tensile properties and impact toughness).
T2  - International Journal of Materials Research
T1  - The influence of microstructural characteristics and contaminants on the mechanical properties and fracture topography of low cost Ti6Al4V alloy
VL  - 99
IS  - 11
SP  - 1268
EP  - 1274
DO  - 10.3139/146.101762
ER  - 

@article{
author = "Božić, Dušan and Sekulić, Danijela R. and Stašić, Jelena and Rajković, Višeslava M. and Jovanović, Milan T.",
year = "2008",
abstract = "Low cost titanium alloy compacts were produced via the powder metallurgy approach through the hydride-dehydride process and hot consolidation (hot pressing and hot isostatic pressing). The conditions of the reversible hydride-dehydride process were determined by X-ray and scanning electron microscopy characterisation of powders. Powders were consolidated both above and below the beta transformation temperature. The morphology of the microstructure, and the presence of open and closed pores, its well as residual particles of hydrides and oxides have a direct influence on the mechanical properties of compacts (tensile properties and impact toughness).",
journal = "International Journal of Materials Research",
title = "The influence of microstructural characteristics and contaminants on the mechanical properties and fracture topography of low cost Ti6Al4V alloy",
volume = "99",
number = "11",
pages = "1268-1274",
doi = "10.3139/146.101762"
}

Božić, D., Sekulić, D. R., Stašić, J., Rajković, V. M.,& Jovanović, M. T.. (2008). The influence of microstructural characteristics and contaminants on the mechanical properties and fracture topography of low cost Ti6Al4V alloy. in International Journal of Materials Research, 99(11), 1268-1274.
https://doi.org/10.3139/146.101762

Božić D, Sekulić DR, Stašić J, Rajković VM, Jovanović MT. The influence of microstructural characteristics and contaminants on the mechanical properties and fracture topography of low cost Ti6Al4V alloy. in International Journal of Materials Research. 2008;99(11):1268-1274.
doi:10.3139/146.101762 .

Božić, Dušan, Sekulić, Danijela R., Stašić, Jelena, Rajković, Višeslava M., Jovanović, Milan T., "The influence of microstructural characteristics and contaminants on the mechanical properties and fracture topography of low cost Ti6Al4V alloy" in International Journal of Materials Research, 99, no. 11 (2008):1268-1274,
https://doi.org/10.3139/146.101762 . .

TY  - JOUR
AU  - Rajković, Višeslava M.
AU  - Božić, Dušan
AU  - Jovanović, Milan T.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3470
AB  - The mixture of electrolytic copper powder with 5 wt.% of commercial Al(2)O(3) powder (average particle size: 15 and 0.75 mu m, respectively) and the inert gas atomized prealloyed copper powder (average particle size: 30 mu m) containing 2.5 wt.% aluminum were separately milled in air up to 20 h in the planetary ball mill. During milling aluminum in the prealloyed copper powders was oxidized in situ by internal oxidation with oxygen from the air forming very fine nano-sized Al(2)O(3) particles. The internal oxidation of 2.5 wt.% aluminum generated 4.7 wt.% of Al(2)O(3) in the copper matrix. Powders and compacts were characterized by light and scanning electron microscopy (SEM), electron probe microanalysis (EPMA) and X-ray diffraction analysis. Microhardness and electrical conductivity were also included in measurements. The microhardness of Cu-2.5 wt.% Al compacts was 3.6 times higher than that of compacts processed from electrolytic copper powder. This increase in microhardness is a consequence of a fine dispersion of Al(2)O(3) particles and refined grain structure. The average values of electrical conductivity of compacts processed from Cu-5 wt.% Al(2)O(3) and Cu-2.5 wt.% Al powders previously milled for 20 h and were 88% and 70% IACS, respectively, which is a rather significant increase if compared with values of 60% and 23% IACS of compacts processed from as-received and non-milled powders. The microhardness of 20-h milled compacts decreases with the heat treatment at 800 degrees C. Due to the effect of nano-sized Al(2)O(3) Particles Cu-2.5 wt.% Al compacts show lower decrease in microhardness. The results are discussed in terms of the effect of Al(2)O(3) Particle size and fine grain structure on the reinforcing of the copper matrix. (C) 2007 Elsevier B.V. All fights reserved.
T2  - Journal of Alloys and Compounds
T1  - Properties of copper matrix reinforced with nano- and micro-sized Al(2)O(3) particles
VL  - 459
IS  - 1-2
SP  - 177
EP  - 184
DO  - 10.1016/j.jallcom.2007.04.307
ER  - 

@article{
author = "Rajković, Višeslava M. and Božić, Dušan and Jovanović, Milan T.",
year = "2008",
abstract = "The mixture of electrolytic copper powder with 5 wt.% of commercial Al(2)O(3) powder (average particle size: 15 and 0.75 mu m, respectively) and the inert gas atomized prealloyed copper powder (average particle size: 30 mu m) containing 2.5 wt.% aluminum were separately milled in air up to 20 h in the planetary ball mill. During milling aluminum in the prealloyed copper powders was oxidized in situ by internal oxidation with oxygen from the air forming very fine nano-sized Al(2)O(3) particles. The internal oxidation of 2.5 wt.% aluminum generated 4.7 wt.% of Al(2)O(3) in the copper matrix. Powders and compacts were characterized by light and scanning electron microscopy (SEM), electron probe microanalysis (EPMA) and X-ray diffraction analysis. Microhardness and electrical conductivity were also included in measurements. The microhardness of Cu-2.5 wt.% Al compacts was 3.6 times higher than that of compacts processed from electrolytic copper powder. This increase in microhardness is a consequence of a fine dispersion of Al(2)O(3) particles and refined grain structure. The average values of electrical conductivity of compacts processed from Cu-5 wt.% Al(2)O(3) and Cu-2.5 wt.% Al powders previously milled for 20 h and were 88% and 70% IACS, respectively, which is a rather significant increase if compared with values of 60% and 23% IACS of compacts processed from as-received and non-milled powders. The microhardness of 20-h milled compacts decreases with the heat treatment at 800 degrees C. Due to the effect of nano-sized Al(2)O(3) Particles Cu-2.5 wt.% Al compacts show lower decrease in microhardness. The results are discussed in terms of the effect of Al(2)O(3) Particle size and fine grain structure on the reinforcing of the copper matrix. (C) 2007 Elsevier B.V. All fights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Properties of copper matrix reinforced with nano- and micro-sized Al(2)O(3) particles",
volume = "459",
number = "1-2",
pages = "177-184",
doi = "10.1016/j.jallcom.2007.04.307"
}

Rajković, V. M., Božić, D.,& Jovanović, M. T.. (2008). Properties of copper matrix reinforced with nano- and micro-sized Al(2)O(3) particles. in Journal of Alloys and Compounds, 459(1-2), 177-184.
https://doi.org/10.1016/j.jallcom.2007.04.307

Rajković VM, Božić D, Jovanović MT. Properties of copper matrix reinforced with nano- and micro-sized Al(2)O(3) particles. in Journal of Alloys and Compounds. 2008;459(1-2):177-184.
doi:10.1016/j.jallcom.2007.04.307 .

Rajković, Višeslava M., Božić, Dušan, Jovanović, Milan T., "Properties of copper matrix reinforced with nano- and micro-sized Al(2)O(3) particles" in Journal of Alloys and Compounds, 459, no. 1-2 (2008):177-184,
https://doi.org/10.1016/j.jallcom.2007.04.307 . .

TY  - JOUR
AU  - Cvijović, Ivana
AU  - Jovanović, Milan T.
AU  - Peruško, Davor
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3506
AB  - The influence of a thin 80Ni-20Cr (at.%) protective coating on the cyclic oxidation of a Ti-24Al-11 Nb (at.%) alloy based on Ti3Al at 600 and 900 degrees C in air was investigated using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction analysis (XRD). The results of the oxidation tests showed that deposited Ni-Cr layer provides an improved oxidation resistance due to the formation of protective oxide scale which barriers the outward Ti diffusion into the scale. In some extent surface formation of the nitride layer also prevents diffusion of alloying elements from the matrix. Although oxidation at 900 degrees C is faster than that at 600 degrees C, a remarkable reduction in mass gain of the alloy with protective coating was observed. The thickness of oxide scale on the coated samples is approximately two times less than that formed on the uncoated samples treated under the same exposure conditions (120 h). (c) 2008 Elsevier Ltd. All rights reserved.
T2  - Corrosion Science
T1  - Cyclic oxidation behaviour of Ti3Al-based alloy with Ni-Cr protective layer
VL  - 50
IS  - 7
SP  - 1919
EP  - 1925
DO  - 10.1016/j.corsci.2008.04.006
ER  - 

@article{
author = "Cvijović, Ivana and Jovanović, Milan T. and Peruško, Davor",
year = "2008",
abstract = "The influence of a thin 80Ni-20Cr (at.%) protective coating on the cyclic oxidation of a Ti-24Al-11 Nb (at.%) alloy based on Ti3Al at 600 and 900 degrees C in air was investigated using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction analysis (XRD). The results of the oxidation tests showed that deposited Ni-Cr layer provides an improved oxidation resistance due to the formation of protective oxide scale which barriers the outward Ti diffusion into the scale. In some extent surface formation of the nitride layer also prevents diffusion of alloying elements from the matrix. Although oxidation at 900 degrees C is faster than that at 600 degrees C, a remarkable reduction in mass gain of the alloy with protective coating was observed. The thickness of oxide scale on the coated samples is approximately two times less than that formed on the uncoated samples treated under the same exposure conditions (120 h). (c) 2008 Elsevier Ltd. All rights reserved.",
journal = "Corrosion Science",
title = "Cyclic oxidation behaviour of Ti3Al-based alloy with Ni-Cr protective layer",
volume = "50",
number = "7",
pages = "1919-1925",
doi = "10.1016/j.corsci.2008.04.006"
}

Cvijović, I., Jovanović, M. T.,& Peruško, D.. (2008). Cyclic oxidation behaviour of Ti3Al-based alloy with Ni-Cr protective layer. in Corrosion Science, 50(7), 1919-1925.
https://doi.org/10.1016/j.corsci.2008.04.006

Cvijović I, Jovanović MT, Peruško D. Cyclic oxidation behaviour of Ti3Al-based alloy with Ni-Cr protective layer. in Corrosion Science. 2008;50(7):1919-1925.
doi:10.1016/j.corsci.2008.04.006 .

Cvijović, Ivana, Jovanović, Milan T., Peruško, Davor, "Cyclic oxidation behaviour of Ti3Al-based alloy with Ni-Cr protective layer" in Corrosion Science, 50, no. 7 (2008):1919-1925,
https://doi.org/10.1016/j.corsci.2008.04.006 . .

TY  - JOUR
AU  - Vencl, Aleksandar
AU  - Bobić, Ilija
AU  - Jovanović, Milan T.
AU  - Babić, Miroslav
AU  - Mitovic, Slobodan
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3572
AB  - In the present study, the effect of the Al2O3 particles (average size of 12 mu m, 3 and 10 wt.%) reinforcement on the microstructure and tribological properties of Al-Si alloy (A356) was investigated. Composites were produced by applying compocasting process. Tribological properties of unreinforced alloy and composites were studied, using pin-on-disc tribometer, under dry sliding conditions at different specific loads and sliding speed of 1 m/s. Microhardness measurements, optical microscope and scanning electron microscope were used for microstructural characterization and investigation of worn surfaces and wear debris. During compocasting of A356 alloy, a transformation from a typical dendritic primary alpha phase to a non-dendritic rosette-like structure occurred. Composites exhibited better wear resistance compared with unreinforced alloy. Presence of 3 wt.% Al2O3 particles in the composite material affected the wear resistance only at specific loads up to 1 MPa. The wear rate of composite with 10 wt.% Al2O3 particles was nearly two order of the magnitude lower than the wear rate of the matrix alloy. Dominant wear mechanism for all materials was adhesion, with others mechanisms: oxidation, abrasion and delamination as minor ones.
T2  - Tribology Letters
T1  - Microstructural and Tribological Properties of A356 Al-Si Alloy Reinforced with Al2O3 Particles
VL  - 32
IS  - 3
SP  - 159
EP  - 170
DO  - 10.1007/s11249-008-9374-6
ER  - 

@article{
author = "Vencl, Aleksandar and Bobić, Ilija and Jovanović, Milan T. and Babić, Miroslav and Mitovic, Slobodan",
year = "2008",
abstract = "In the present study, the effect of the Al2O3 particles (average size of 12 mu m, 3 and 10 wt.%) reinforcement on the microstructure and tribological properties of Al-Si alloy (A356) was investigated. Composites were produced by applying compocasting process. Tribological properties of unreinforced alloy and composites were studied, using pin-on-disc tribometer, under dry sliding conditions at different specific loads and sliding speed of 1 m/s. Microhardness measurements, optical microscope and scanning electron microscope were used for microstructural characterization and investigation of worn surfaces and wear debris. During compocasting of A356 alloy, a transformation from a typical dendritic primary alpha phase to a non-dendritic rosette-like structure occurred. Composites exhibited better wear resistance compared with unreinforced alloy. Presence of 3 wt.% Al2O3 particles in the composite material affected the wear resistance only at specific loads up to 1 MPa. The wear rate of composite with 10 wt.% Al2O3 particles was nearly two order of the magnitude lower than the wear rate of the matrix alloy. Dominant wear mechanism for all materials was adhesion, with others mechanisms: oxidation, abrasion and delamination as minor ones.",
journal = "Tribology Letters",
title = "Microstructural and Tribological Properties of A356 Al-Si Alloy Reinforced with Al2O3 Particles",
volume = "32",
number = "3",
pages = "159-170",
doi = "10.1007/s11249-008-9374-6"
}

Vencl, A., Bobić, I., Jovanović, M. T., Babić, M.,& Mitovic, S.. (2008). Microstructural and Tribological Properties of A356 Al-Si Alloy Reinforced with Al2O3 Particles. in Tribology Letters, 32(3), 159-170.
https://doi.org/10.1007/s11249-008-9374-6

Vencl A, Bobić I, Jovanović MT, Babić M, Mitovic S. Microstructural and Tribological Properties of A356 Al-Si Alloy Reinforced with Al2O3 Particles. in Tribology Letters. 2008;32(3):159-170.
doi:10.1007/s11249-008-9374-6 .

Vencl, Aleksandar, Bobić, Ilija, Jovanović, Milan T., Babić, Miroslav, Mitovic, Slobodan, "Microstructural and Tribological Properties of A356 Al-Si Alloy Reinforced with Al2O3 Particles" in Tribology Letters, 32, no. 3 (2008):159-170,
https://doi.org/10.1007/s11249-008-9374-6 . .