TY  - JOUR
AU  - Božić, Dušan
AU  - Dimčić, Biljana
AU  - Dimcic, O.
AU  - Stašić, Jelena
AU  - Rajković, Višeslava M.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3255
AB  - In the last 20 years a new class of metal matrix composite material (DRA - Discontinuously Reinforced Aluminum) with aluminum alloy matrix and Sic particles as secondary phase has been developed. The most important step during composite production is the homogenization process of metal and ceramic powder particles. Quantitative analysis of a SiC particles distribution in the aluminum alloy matrix (CW67) was used to determine the optimum homogenization parameters of different powders. It was found out that the level of mixture homogeneity largely depends on the amount of mixing dish filling, homogenization time and characteristics of reinforcing particles. By introducing the concept of homogeneity index, it was shown that the lowest values of the mentioned parameter correspond to the best uniformity of Sic particles in the CW67 matrix. Composite with the lowest value of homogeneity index was the one with 5 vol.% of SiC, homogenized during 60 min and the amount of mixing dish filling of 20 vol.%. This composite displayed the best values of mechanical properties and fracture resistance. (C) 2009 Elsevier Ltd. All rights reserved.
T2  - Materials and Design
T1  - Influence of SiC particles distribution on mechanical properties and fracture of DRA alloys
VL  - 31
IS  - 1
SP  - 134
EP  - 141
DO  - 10.1016/j.matdes.2009.06.047
ER  - 

@article{
author = "Božić, Dušan and Dimčić, Biljana and Dimcic, O. and Stašić, Jelena and Rajković, Višeslava M.",
year = "2010",
abstract = "In the last 20 years a new class of metal matrix composite material (DRA - Discontinuously Reinforced Aluminum) with aluminum alloy matrix and Sic particles as secondary phase has been developed. The most important step during composite production is the homogenization process of metal and ceramic powder particles. Quantitative analysis of a SiC particles distribution in the aluminum alloy matrix (CW67) was used to determine the optimum homogenization parameters of different powders. It was found out that the level of mixture homogeneity largely depends on the amount of mixing dish filling, homogenization time and characteristics of reinforcing particles. By introducing the concept of homogeneity index, it was shown that the lowest values of the mentioned parameter correspond to the best uniformity of Sic particles in the CW67 matrix. Composite with the lowest value of homogeneity index was the one with 5 vol.% of SiC, homogenized during 60 min and the amount of mixing dish filling of 20 vol.%. This composite displayed the best values of mechanical properties and fracture resistance. (C) 2009 Elsevier Ltd. All rights reserved.",
journal = "Materials and Design",
title = "Influence of SiC particles distribution on mechanical properties and fracture of DRA alloys",
volume = "31",
number = "1",
pages = "134-141",
doi = "10.1016/j.matdes.2009.06.047"
}

Božić, D., Dimčić, B., Dimcic, O., Stašić, J.,& Rajković, V. M.. (2010). Influence of SiC particles distribution on mechanical properties and fracture of DRA alloys. in Materials and Design, 31(1), 134-141.
https://doi.org/10.1016/j.matdes.2009.06.047

Božić D, Dimčić B, Dimcic O, Stašić J, Rajković VM. Influence of SiC particles distribution on mechanical properties and fracture of DRA alloys. in Materials and Design. 2010;31(1):134-141.
doi:10.1016/j.matdes.2009.06.047 .

Božić, Dušan, Dimčić, Biljana, Dimcic, O., Stašić, Jelena, Rajković, Višeslava M., "Influence of SiC particles distribution on mechanical properties and fracture of DRA alloys" in Materials and Design, 31, no. 1 (2010):134-141,
https://doi.org/10.1016/j.matdes.2009.06.047 . .

TY  - JOUR
AU  - Božić, Dušan
AU  - Dimcic, O.
AU  - Dimčić, Biljana
AU  - Vilotijević, Miroljub N.
AU  - Riznic-Dimitrijevic, S.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3846
AB  - It is a well known fact that behavior of materials during consolidation at high temperatures is a very complex issue. Each mechanism that promotes densification, depends on a large number of parameters in many different ways, making the development of the densification process very difficult to plan. For that reason, any kind of model which could encompass large number of the influencing parameters would be a great contribution for easier planning and handling of the densification process. Modeling of densification process based on the papers of well-known authors, including a new appropriate modifications is presented in this work. Importance of this model is that it can be applicable to composite materials. This new model was tested on a real Al-SiC composite systems (Al-10 vol.% SiC, Al-30 vol.% SiC and Al-50 vol.% SiC). Predicted behavior of composites obtained by model calculations and the one defined through the experiments concur in the 7-30% range. (C) 2009 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Modeling of densification process for particle reinforced composites
VL  - 487
IS  - 1-2
SP  - 511
EP  - 516
DO  - 10.1016/j.jallcom.2009.08.003
ER  - 

@article{
author = "Božić, Dušan and Dimcic, O. and Dimčić, Biljana and Vilotijević, Miroljub N. and Riznic-Dimitrijevic, S.",
year = "2009",
abstract = "It is a well known fact that behavior of materials during consolidation at high temperatures is a very complex issue. Each mechanism that promotes densification, depends on a large number of parameters in many different ways, making the development of the densification process very difficult to plan. For that reason, any kind of model which could encompass large number of the influencing parameters would be a great contribution for easier planning and handling of the densification process. Modeling of densification process based on the papers of well-known authors, including a new appropriate modifications is presented in this work. Importance of this model is that it can be applicable to composite materials. This new model was tested on a real Al-SiC composite systems (Al-10 vol.% SiC, Al-30 vol.% SiC and Al-50 vol.% SiC). Predicted behavior of composites obtained by model calculations and the one defined through the experiments concur in the 7-30% range. (C) 2009 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Modeling of densification process for particle reinforced composites",
volume = "487",
number = "1-2",
pages = "511-516",
doi = "10.1016/j.jallcom.2009.08.003"
}

Božić, D., Dimcic, O., Dimčić, B., Vilotijević, M. N.,& Riznic-Dimitrijevic, S.. (2009). Modeling of densification process for particle reinforced composites. in Journal of Alloys and Compounds, 487(1-2), 511-516.
https://doi.org/10.1016/j.jallcom.2009.08.003

Božić D, Dimcic O, Dimčić B, Vilotijević MN, Riznic-Dimitrijevic S. Modeling of densification process for particle reinforced composites. in Journal of Alloys and Compounds. 2009;487(1-2):511-516.
doi:10.1016/j.jallcom.2009.08.003 .

Božić, Dušan, Dimcic, O., Dimčić, Biljana, Vilotijević, Miroljub N., Riznic-Dimitrijevic, S., "Modeling of densification process for particle reinforced composites" in Journal of Alloys and Compounds, 487, no. 1-2 (2009):511-516,
https://doi.org/10.1016/j.jallcom.2009.08.003 . .

TY  - JOUR
AU  - Božić, Dušan
AU  - Dimcic, O.
AU  - Dimčić, Biljana
AU  - Cuijovic, I.
AU  - Rajković, Višeslava M.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3485
AB  - Microstructure and microhardness properties of precipitation hardened Cu-Ti and precipitation/dispersion hardened Cu-Ti-Si alloys have been analyzed. Cu-1.2Ti and Cu-1.2Ti-3TiSi(2) (wt.%) atomized powders were characterized before and after consolidation by HIP (Hot Isostatic Pressing). Rapidly solidified powders and HIP-ed compacts were subsequently subjected to thermal treatment in hydrogen at temperatures between 300 and 600 degrees C. Compared to Cu-Ti powder particles and compacts, obtained by the same procedure, the strengthening effect in Cu-1.2Ti-3TiSi(2) powder particles and compacts was much greater. The binary and ternary powders both reveal properties superior to those of Cu-1.2Ti and Cu-1.2Ti-3TiSi(2) compacts. Microhardness analysis as a function of the aging temperature of Cu-1.2Ti-3TiSi(2) alloy shows an interaction between precipitation and dispersion hardening which offers possibilities for an application at elevated temperatures. (C) 2007 Elsevier Inc. All rights reserved.
T2  - Materials Characterization
T1  - The combination of precipitation and dispersion hardening in powder metallurgy produced Cu-Ti-Si alloy
VL  - 59
IS  - 8
SP  - 1122
EP  - 1126
DO  - 10.1016/j.matchar.2007.09.005
ER  - 

@article{
author = "Božić, Dušan and Dimcic, O. and Dimčić, Biljana and Cuijovic, I. and Rajković, Višeslava M.",
year = "2008",
abstract = "Microstructure and microhardness properties of precipitation hardened Cu-Ti and precipitation/dispersion hardened Cu-Ti-Si alloys have been analyzed. Cu-1.2Ti and Cu-1.2Ti-3TiSi(2) (wt.%) atomized powders were characterized before and after consolidation by HIP (Hot Isostatic Pressing). Rapidly solidified powders and HIP-ed compacts were subsequently subjected to thermal treatment in hydrogen at temperatures between 300 and 600 degrees C. Compared to Cu-Ti powder particles and compacts, obtained by the same procedure, the strengthening effect in Cu-1.2Ti-3TiSi(2) powder particles and compacts was much greater. The binary and ternary powders both reveal properties superior to those of Cu-1.2Ti and Cu-1.2Ti-3TiSi(2) compacts. Microhardness analysis as a function of the aging temperature of Cu-1.2Ti-3TiSi(2) alloy shows an interaction between precipitation and dispersion hardening which offers possibilities for an application at elevated temperatures. (C) 2007 Elsevier Inc. All rights reserved.",
journal = "Materials Characterization",
title = "The combination of precipitation and dispersion hardening in powder metallurgy produced Cu-Ti-Si alloy",
volume = "59",
number = "8",
pages = "1122-1126",
doi = "10.1016/j.matchar.2007.09.005"
}

Božić, D., Dimcic, O., Dimčić, B., Cuijovic, I.,& Rajković, V. M.. (2008). The combination of precipitation and dispersion hardening in powder metallurgy produced Cu-Ti-Si alloy. in Materials Characterization, 59(8), 1122-1126.
https://doi.org/10.1016/j.matchar.2007.09.005

Božić D, Dimcic O, Dimčić B, Cuijovic I, Rajković VM. The combination of precipitation and dispersion hardening in powder metallurgy produced Cu-Ti-Si alloy. in Materials Characterization. 2008;59(8):1122-1126.
doi:10.1016/j.matchar.2007.09.005 .

Božić, Dušan, Dimcic, O., Dimčić, Biljana, Cuijovic, I., Rajković, Višeslava M., "The combination of precipitation and dispersion hardening in powder metallurgy produced Cu-Ti-Si alloy" in Materials Characterization, 59, no. 8 (2008):1122-1126,
https://doi.org/10.1016/j.matchar.2007.09.005 . .

TY  - JOUR
AU  - Dimčić, Biljana
AU  - Cvijović, Ivana
AU  - Jovanović, Milan T.
AU  - Božić, Dušan
AU  - Dimcic, O.
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3048
AB  - This work considers structural and compression mechanical properties of three Ti3Al-based alloys processed by powder metallurgy. Mechanically alloyed powders were compacted by hot-pressing to non-porous homogenous compacts. Prior to compression tests, all compacts were homogenized by a solution treatment at 1050 degrees C (alpha + beta region) for 1h, followed by water quenching. The compression tests were performed from room temperature to 500 degrees C in vacuum at a strain rate of 2.4 x 10(-3) s(-1). Detailed microstructural characterization has been evaluated by scanning electron microscopy (SEM), followed by electron dispersive spectroscopy (EDS) and X-ray diffraction analysis. Fracture topography was examined by SEM. The Ti3Al-Nb alloy exhibits the highest ductility in the whole temperature range, whereas addition of Mo to Ti3Al-Nb alloy yields the highest ultimate compression strength. A correlation between ductility and the fracture mode exists for all materials. (c) 2006 Springer Science + Business Media, Inc.
T2  - Journal of Materials Science
T1  - Mechanical and fracture behavior of powder metallurgy processed Ti3Al-based alloys
VL  - 41
IS  - 13
SP  - 4307
EP  - 4313
DO  - 10.1007/s10853-006-7002-0
ER  - 

@article{
author = "Dimčić, Biljana and Cvijović, Ivana and Jovanović, Milan T. and Božić, Dušan and Dimcic, O.",
year = "2006",
abstract = "This work considers structural and compression mechanical properties of three Ti3Al-based alloys processed by powder metallurgy. Mechanically alloyed powders were compacted by hot-pressing to non-porous homogenous compacts. Prior to compression tests, all compacts were homogenized by a solution treatment at 1050 degrees C (alpha + beta region) for 1h, followed by water quenching. The compression tests were performed from room temperature to 500 degrees C in vacuum at a strain rate of 2.4 x 10(-3) s(-1). Detailed microstructural characterization has been evaluated by scanning electron microscopy (SEM), followed by electron dispersive spectroscopy (EDS) and X-ray diffraction analysis. Fracture topography was examined by SEM. The Ti3Al-Nb alloy exhibits the highest ductility in the whole temperature range, whereas addition of Mo to Ti3Al-Nb alloy yields the highest ultimate compression strength. A correlation between ductility and the fracture mode exists for all materials. (c) 2006 Springer Science + Business Media, Inc.",
journal = "Journal of Materials Science",
title = "Mechanical and fracture behavior of powder metallurgy processed Ti3Al-based alloys",
volume = "41",
number = "13",
pages = "4307-4313",
doi = "10.1007/s10853-006-7002-0"
}

Dimčić, B., Cvijović, I., Jovanović, M. T., Božić, D.,& Dimcic, O.. (2006). Mechanical and fracture behavior of powder metallurgy processed Ti3Al-based alloys. in Journal of Materials Science, 41(13), 4307-4313.
https://doi.org/10.1007/s10853-006-7002-0

Dimčić B, Cvijović I, Jovanović MT, Božić D, Dimcic O. Mechanical and fracture behavior of powder metallurgy processed Ti3Al-based alloys. in Journal of Materials Science. 2006;41(13):4307-4313.
doi:10.1007/s10853-006-7002-0 .

Dimčić, Biljana, Cvijović, Ivana, Jovanović, Milan T., Božić, Dušan, Dimcic, O., "Mechanical and fracture behavior of powder metallurgy processed Ti3Al-based alloys" in Journal of Materials Science, 41, no. 13 (2006):4307-4313,
https://doi.org/10.1007/s10853-006-7002-0 . .