TY  - JOUR
AU  - Veličković, Sandra
AU  - Stojanović, Blaža
AU  - Babić, Miroslav
AU  - Bobić, Ilija
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1631
AB  - This paper analyses the influence of graphite reinforcement, load and sliding speed with constant sliding distance on tribological behavior of A356 aluminum matrix composites reinforced with 10wt.% silicon carbide and graphite using the Taguchi design. Hybrid composites were produced in the compo-casting process. Tribological tests were performed on a block-on-disc tribometer where the weight percentage of graphite has three variations (0, 3, and 5), as well as load (10 N, 20 N, and 30 N) and sliding speed (0.25m/s, 0.5m/s, and 1m/s), with sliding distance of 300m. The wear of the composite is investigated under dry sliding condition. The specific wear rate was analyzed using Taguchi method with the aim of finding the optimal parameters. By applying analysis of variance, it was determined that the best tribological properties has A356/10SiC/3Gr hybrid composite. It was also found that the greatest impact on specific wear rate has load with the percentage effect of 69.163%, then sliding speed with 14.426% and the interaction between wt.% graphite and load. The dominant wear mechanism is adhesive wear as confirmed by scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS).
T2  - Journal of Composite Materials
T1  - Optimization of tribological properties of aluminum hybrid composites using Taguchi design
VL  - 51
IS  - 17
SP  - 2505
EP  - 2515
DO  - 10.1177/0021998316672294
ER  - 

@article{
author = "Veličković, Sandra and Stojanović, Blaža and Babić, Miroslav and Bobić, Ilija",
year = "2017",
abstract = "This paper analyses the influence of graphite reinforcement, load and sliding speed with constant sliding distance on tribological behavior of A356 aluminum matrix composites reinforced with 10wt.% silicon carbide and graphite using the Taguchi design. Hybrid composites were produced in the compo-casting process. Tribological tests were performed on a block-on-disc tribometer where the weight percentage of graphite has three variations (0, 3, and 5), as well as load (10 N, 20 N, and 30 N) and sliding speed (0.25m/s, 0.5m/s, and 1m/s), with sliding distance of 300m. The wear of the composite is investigated under dry sliding condition. The specific wear rate was analyzed using Taguchi method with the aim of finding the optimal parameters. By applying analysis of variance, it was determined that the best tribological properties has A356/10SiC/3Gr hybrid composite. It was also found that the greatest impact on specific wear rate has load with the percentage effect of 69.163%, then sliding speed with 14.426% and the interaction between wt.% graphite and load. The dominant wear mechanism is adhesive wear as confirmed by scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS).",
journal = "Journal of Composite Materials",
title = "Optimization of tribological properties of aluminum hybrid composites using Taguchi design",
volume = "51",
number = "17",
pages = "2505-2515",
doi = "10.1177/0021998316672294"
}

Veličković, S., Stojanović, B., Babić, M.,& Bobić, I.. (2017). Optimization of tribological properties of aluminum hybrid composites using Taguchi design. in Journal of Composite Materials, 51(17), 2505-2515.
https://doi.org/10.1177/0021998316672294

Veličković S, Stojanović B, Babić M, Bobić I. Optimization of tribological properties of aluminum hybrid composites using Taguchi design. in Journal of Composite Materials. 2017;51(17):2505-2515.
doi:10.1177/0021998316672294 .

Veličković, Sandra, Stojanović, Blaža, Babić, Miroslav, Bobić, Ilija, "Optimization of tribological properties of aluminum hybrid composites using Taguchi design" in Journal of Composite Materials, 51, no. 17 (2017):2505-2515,
https://doi.org/10.1177/0021998316672294 . .

TY  - JOUR
AU  - Bobić, Ilija
AU  - Ružić, Jovana
AU  - Bobić, Biljana M.
AU  - Babić, Miroslav
AU  - Vencl, Aleksandar
AU  - Mitrovic, Slobodan
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/128
AB  - Hybrid A356/SiCp/Gr(p) composites were produced via compo-casting using the A356 aluminum alloy as the composite matrix, with silicon carbide microparticles (SiCp) and graphite macroparticles (Gr(p)) as reinforcements. The effect of the thixocasting process on the microstructure of a modified A356 alloy (with 0.03 mass% of strontium) was considered. The microstructures of the thixocast A356 alloy and the synthesized composite materials were examined by means of optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDS) and X-ray diffraction (XRD). The fracture surfaces of the composite matrix and the composites were also analyzed. The thixocast A356 alloy and the composites were subjected to artificial aging after a solution heat treatment. Aging kinetics was followed by hardness measurements. Differential scanning calorimetry (DSC) was applied to reveal the presence of phases formed during artificial aging. The composites reached maximum hardness faster than the thixocast A356 alloy. The time required to attain peak hardness decreases with the increase in the content of particulate reinforcements. (C) 2014 Elsevier B.V. All rights reserved.
T2  - Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing
T1  - Microstructural characterization and artificial aging of compo-casted hybrid A356/SiCp/Gr(p) composites with graphite macroparticles
VL  - 612
SP  - 7
EP  - 15
DO  - 10.1016/j.msea.2014.06.028
ER  - 

@article{
author = "Bobić, Ilija and Ružić, Jovana and Bobić, Biljana M. and Babić, Miroslav and Vencl, Aleksandar and Mitrovic, Slobodan",
year = "2014",
abstract = "Hybrid A356/SiCp/Gr(p) composites were produced via compo-casting using the A356 aluminum alloy as the composite matrix, with silicon carbide microparticles (SiCp) and graphite macroparticles (Gr(p)) as reinforcements. The effect of the thixocasting process on the microstructure of a modified A356 alloy (with 0.03 mass% of strontium) was considered. The microstructures of the thixocast A356 alloy and the synthesized composite materials were examined by means of optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDS) and X-ray diffraction (XRD). The fracture surfaces of the composite matrix and the composites were also analyzed. The thixocast A356 alloy and the composites were subjected to artificial aging after a solution heat treatment. Aging kinetics was followed by hardness measurements. Differential scanning calorimetry (DSC) was applied to reveal the presence of phases formed during artificial aging. The composites reached maximum hardness faster than the thixocast A356 alloy. The time required to attain peak hardness decreases with the increase in the content of particulate reinforcements. (C) 2014 Elsevier B.V. All rights reserved.",
journal = "Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing",
title = "Microstructural characterization and artificial aging of compo-casted hybrid A356/SiCp/Gr(p) composites with graphite macroparticles",
volume = "612",
pages = "7-15",
doi = "10.1016/j.msea.2014.06.028"
}

Bobić, I., Ružić, J., Bobić, B. M., Babić, M., Vencl, A.,& Mitrovic, S.. (2014). Microstructural characterization and artificial aging of compo-casted hybrid A356/SiCp/Gr(p) composites with graphite macroparticles. in Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing, 612, 7-15.
https://doi.org/10.1016/j.msea.2014.06.028

Bobić I, Ružić J, Bobić BM, Babić M, Vencl A, Mitrovic S. Microstructural characterization and artificial aging of compo-casted hybrid A356/SiCp/Gr(p) composites with graphite macroparticles. in Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing. 2014;612:7-15.
doi:10.1016/j.msea.2014.06.028 .

Bobić, Ilija, Ružić, Jovana, Bobić, Biljana M., Babić, Miroslav, Vencl, Aleksandar, Mitrovic, Slobodan, "Microstructural characterization and artificial aging of compo-casted hybrid A356/SiCp/Gr(p) composites with graphite macroparticles" in Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing, 612 (2014):7-15,
https://doi.org/10.1016/j.msea.2014.06.028 . .

TY  - JOUR
AU  - Bobić, Ilija
AU  - Babić, Miroslav
AU  - Vencl, Aleksandar
AU  - Bobić, Biljana M.
AU  - Mitrovic, Slobodan
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5727
AB  - Thixocast ZA27 alloy and particulate ZA27/SiCp composites were subjected to artificial aging at 80, 120 and 160 degrees C (T5 regime). Composites with 5 and 10 vol.% SiC particles were produced via the compocasting method. The influence of the aging was investigated using different techniques. Differential scanning calorimetry was performed to reveal the presence of phases created in the thixocast ZA27 alloy and the composites. Microstructures and fracture behavior were examined by means of optical microscopy, scanning electron microscopy and X-ray diffraction. Aging processes in the matrix alloy and composites were followed using hardness measurements. A decrease in the hardness values was noticed with the increase in the aging temperature. At higher temperatures diffusion of zinc atoms from supersaturated phases in the matrix alloy was enhanced, which resulted in faster changes in the hardness. Aging processes in the composites were significantly accelerated compared to the matrix alloy, due to the presence of particulate reinforcements. The maximum in hardness was achieved for shorter time in the ZA27/SiCp composite with higher volume fraction of SiC particles.
T2  - International Journal of Materials Research
T1  - Artificial aging of thixocast ZA27 alloy and particulate ZA27/SiCp composites
VL  - 104
IS  - 10
SP  - 954
EP  - 965
DO  - 10.3139/146.110958
ER  - 

@article{
author = "Bobić, Ilija and Babić, Miroslav and Vencl, Aleksandar and Bobić, Biljana M. and Mitrovic, Slobodan",
year = "2013",
abstract = "Thixocast ZA27 alloy and particulate ZA27/SiCp composites were subjected to artificial aging at 80, 120 and 160 degrees C (T5 regime). Composites with 5 and 10 vol.% SiC particles were produced via the compocasting method. The influence of the aging was investigated using different techniques. Differential scanning calorimetry was performed to reveal the presence of phases created in the thixocast ZA27 alloy and the composites. Microstructures and fracture behavior were examined by means of optical microscopy, scanning electron microscopy and X-ray diffraction. Aging processes in the matrix alloy and composites were followed using hardness measurements. A decrease in the hardness values was noticed with the increase in the aging temperature. At higher temperatures diffusion of zinc atoms from supersaturated phases in the matrix alloy was enhanced, which resulted in faster changes in the hardness. Aging processes in the composites were significantly accelerated compared to the matrix alloy, due to the presence of particulate reinforcements. The maximum in hardness was achieved for shorter time in the ZA27/SiCp composite with higher volume fraction of SiC particles.",
journal = "International Journal of Materials Research",
title = "Artificial aging of thixocast ZA27 alloy and particulate ZA27/SiCp composites",
volume = "104",
number = "10",
pages = "954-965",
doi = "10.3139/146.110958"
}

Bobić, I., Babić, M., Vencl, A., Bobić, B. M.,& Mitrovic, S.. (2013). Artificial aging of thixocast ZA27 alloy and particulate ZA27/SiCp composites. in International Journal of Materials Research, 104(10), 954-965.
https://doi.org/10.3139/146.110958

Bobić I, Babić M, Vencl A, Bobić BM, Mitrovic S. Artificial aging of thixocast ZA27 alloy and particulate ZA27/SiCp composites. in International Journal of Materials Research. 2013;104(10):954-965.
doi:10.3139/146.110958 .

Bobić, Ilija, Babić, Miroslav, Vencl, Aleksandar, Bobić, Biljana M., Mitrovic, Slobodan, "Artificial aging of thixocast ZA27 alloy and particulate ZA27/SiCp composites" in International Journal of Materials Research, 104, no. 10 (2013):954-965,
https://doi.org/10.3139/146.110958 . .

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  - Vencl, Aleksandar
AU  - Bobić, Ilija
AU  - Arostegui, Saioa
AU  - Bobić, Biljana M.
AU  - Marinković, Aleksandar D.
AU  - Babić, Miroslav
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4122
AB  - Particulate composites with A356 aluminium alloy as a matrix were produced by compocasting process using ceramic particles (Al2O3, SiC) and graphite particles. The matrix alloy and the composites were thermally processed applying the T6 heat treatment regime. Structural, mechanical and tribological properties of heat treated matrix alloy and the composites were examined and compared. It was shown that heat treatment affected microstructure of the composites matrix. The fracture of the composites matrix was ductile, while transition from ductile to brittle fracture occurred in the zone of reinforcing particles. The values of elasticity modulus of all the composites were higher in relation to the matrix alloy. It was also established that wear resistance and coefficient of friction were better at the SiC particulate composites than at the Al2O3 particulate composite, while the addition of graphite particles improved tribological properties further. (c) 2010 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Structural, mechanical and tribological properties of A356 aluminium alloy reinforced with Al2O3, SiC and SiC plus graphite particles
VL  - 506
IS  - 2
SP  - 631
EP  - 639
DO  - 10.1016/j.jallcom.2010.07.028
ER  - 

@article{
author = "Vencl, Aleksandar and Bobić, Ilija and Arostegui, Saioa and Bobić, Biljana M. and Marinković, Aleksandar D. and Babić, Miroslav",
year = "2010",
abstract = "Particulate composites with A356 aluminium alloy as a matrix were produced by compocasting process using ceramic particles (Al2O3, SiC) and graphite particles. The matrix alloy and the composites were thermally processed applying the T6 heat treatment regime. Structural, mechanical and tribological properties of heat treated matrix alloy and the composites were examined and compared. It was shown that heat treatment affected microstructure of the composites matrix. The fracture of the composites matrix was ductile, while transition from ductile to brittle fracture occurred in the zone of reinforcing particles. The values of elasticity modulus of all the composites were higher in relation to the matrix alloy. It was also established that wear resistance and coefficient of friction were better at the SiC particulate composites than at the Al2O3 particulate composite, while the addition of graphite particles improved tribological properties further. (c) 2010 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Structural, mechanical and tribological properties of A356 aluminium alloy reinforced with Al2O3, SiC and SiC plus graphite particles",
volume = "506",
number = "2",
pages = "631-639",
doi = "10.1016/j.jallcom.2010.07.028"
}

Vencl, A., Bobić, I., Arostegui, S., Bobić, B. M., Marinković, A. D.,& Babić, M.. (2010). Structural, mechanical and tribological properties of A356 aluminium alloy reinforced with Al2O3, SiC and SiC plus graphite particles. in Journal of Alloys and Compounds, 506(2), 631-639.
https://doi.org/10.1016/j.jallcom.2010.07.028

Vencl A, Bobić I, Arostegui S, Bobić BM, Marinković AD, Babić M. Structural, mechanical and tribological properties of A356 aluminium alloy reinforced with Al2O3, SiC and SiC plus graphite particles. in Journal of Alloys and Compounds. 2010;506(2):631-639.
doi:10.1016/j.jallcom.2010.07.028 .

Vencl, Aleksandar, Bobić, Ilija, Arostegui, Saioa, Bobić, Biljana M., Marinković, Aleksandar D., Babić, Miroslav, "Structural, mechanical and tribological properties of A356 aluminium alloy reinforced with Al2O3, SiC and SiC plus graphite particles" in Journal of Alloys and Compounds, 506, no. 2 (2010):631-639,
https://doi.org/10.1016/j.jallcom.2010.07.028 . .

TY  - JOUR
AU  - Babić, Miroslav
AU  - Slobodan, Mitrovic
AU  - Dzunic, Dragan
AU  - Jeremic, Branislav
AU  - Bobić, Ilija
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3887
AB  - The objective of this investigation is to assess the influence of graphite reinforcement on tribological behavior of ZA-27 alloy. The composite with 2 wt% of graphite particles was produced by the compocasting procedure. Tribological properties of unreinforced alloy and composite were studied, using block-on-disk tribometer, under dry and lubricated sliding conditions at different specific loads and sliding speeds. The worn surfaces of the samples were examined by the scanning electron microscopy (SEM). The obtained results revealed that ZA-27/graphite composite specimens exhibited significantly lower wear rate and coefficient of friction than the matrix alloy specimens in all the combinations of applied loads (F (n) ) and sliding speeds (v) in dry and lubricated tests. The positive tribological effects of graphite reinforcement of ZA-27 in dry sliding tests were provided by the tribo-induced graphite film on the contact surface of composite. In test conditions, characterized by the small graphite content and modest sliding speeds and applied loads, nonuniform tribo-induced graphite films were formed leading to the increase of the friction coefficient and wear rate, with increase of the sliding speed and applied load. In conditions of lubricated sliding, the very fine graphite particles formed in the contact interface mix with the lubricating oil forming the emulsion with improved tribological characteristics. Smeared graphite decreased the negative influence of F (n) on tribological response of composites, what is manifested by the mild regime of the boundary lubrication, as well as by realization of the mixed lubrication at lower values of the v/F (n) ratio, with respect to the matrix alloy.
T2  - Tribology Letters
T1  - Tribological Behavior of Composites Based on ZA-27 Alloy Reinforced with Graphite Particles
VL  - 37
IS  - 2
SP  - 401
EP  - 410
DO  - 10.1007/s11249-009-9535-2
ER  - 

@article{
author = "Babić, Miroslav and Slobodan, Mitrovic and Dzunic, Dragan and Jeremic, Branislav and Bobić, Ilija",
year = "2010",
abstract = "The objective of this investigation is to assess the influence of graphite reinforcement on tribological behavior of ZA-27 alloy. The composite with 2 wt% of graphite particles was produced by the compocasting procedure. Tribological properties of unreinforced alloy and composite were studied, using block-on-disk tribometer, under dry and lubricated sliding conditions at different specific loads and sliding speeds. The worn surfaces of the samples were examined by the scanning electron microscopy (SEM). The obtained results revealed that ZA-27/graphite composite specimens exhibited significantly lower wear rate and coefficient of friction than the matrix alloy specimens in all the combinations of applied loads (F (n) ) and sliding speeds (v) in dry and lubricated tests. The positive tribological effects of graphite reinforcement of ZA-27 in dry sliding tests were provided by the tribo-induced graphite film on the contact surface of composite. In test conditions, characterized by the small graphite content and modest sliding speeds and applied loads, nonuniform tribo-induced graphite films were formed leading to the increase of the friction coefficient and wear rate, with increase of the sliding speed and applied load. In conditions of lubricated sliding, the very fine graphite particles formed in the contact interface mix with the lubricating oil forming the emulsion with improved tribological characteristics. Smeared graphite decreased the negative influence of F (n) on tribological response of composites, what is manifested by the mild regime of the boundary lubrication, as well as by realization of the mixed lubrication at lower values of the v/F (n) ratio, with respect to the matrix alloy.",
journal = "Tribology Letters",
title = "Tribological Behavior of Composites Based on ZA-27 Alloy Reinforced with Graphite Particles",
volume = "37",
number = "2",
pages = "401-410",
doi = "10.1007/s11249-009-9535-2"
}

Babić, M., Slobodan, M., Dzunic, D., Jeremic, B.,& Bobić, I.. (2010). Tribological Behavior of Composites Based on ZA-27 Alloy Reinforced with Graphite Particles. in Tribology Letters, 37(2), 401-410.
https://doi.org/10.1007/s11249-009-9535-2

Babić M, Slobodan M, Dzunic D, Jeremic B, Bobić I. Tribological Behavior of Composites Based on ZA-27 Alloy Reinforced with Graphite Particles. in Tribology Letters. 2010;37(2):401-410.
doi:10.1007/s11249-009-9535-2 .

Babić, Miroslav, Slobodan, Mitrovic, Dzunic, Dragan, Jeremic, Branislav, Bobić, Ilija, "Tribological Behavior of Composites Based on ZA-27 Alloy Reinforced with Graphite Particles" in Tribology Letters, 37, no. 2 (2010):401-410,
https://doi.org/10.1007/s11249-009-9535-2 . .

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 . .