TY  - JOUR
AU  - Veličković, Sandra
AU  - Stojanović, Blaža
AU  - Babić, Miroslav
AU  - Vencl, Aleksandar
AU  - Bobić, Ilija
AU  - Vadaszne Bognar, Gabriella
AU  - Vučetić, Filip
PY  - 2019
UR  - http://link.springer.com/10.1007/s40430-018-1531-8
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8077
AB  - The optimization of wear rate of the nanocomposites with A356 aluminium alloy matrix, reinforced with silicon carbide nanoparticles, was performed through the analysis of the following influences: wt% of the reinforcement, normal load and sliding speed. The nanocomposites were produced by the compocasting process with mechanical alloying preprocessing (ball milling). Three different amounts of SiC nanoparticles, with the same average size of 50 nm, were used as reinforcement, i.e. 0.2, 0.3 and 0.5 wt%. Tribological tests were performed on block-on-disc tribometer (line contact) under lubricated sliding conditions, at two sliding speeds (0.25 and 1 m/s), two normal loads (40 and 100 N) and at sliding distance of 1000 m. Analysis of variance (ANOVA) was applied to determine the influence of different parameters on wear value of tested nanocomposites. It was noticed from ANOVA analysis that normal load, with 33.39%, is the most significant factor affecting the wear rate of nanocomposites. The amount of reinforcement, with 28.90%, also has a significant influence on the wear rate, while the influence of sliding speed, with 23.82%, is smaller. It was found that the prediction of wear rate, by using regression model and Taguchi analysis, were close to the experimental values. © The Brazilian Society of Mechanical Sciences and Engineering 2018.
T2  - Journal of the Brazilian Society of Mechanical Sciences and Engineering
T1  - Parametric optimization of the aluminium nanocomposites wear rate
VL  - 41
IS  - 1
SP  - 19
DO  - 10.1007/s40430-018-1531-8
ER  - 

@article{
author = "Veličković, Sandra and Stojanović, Blaža and Babić, Miroslav and Vencl, Aleksandar and Bobić, Ilija and Vadaszne Bognar, Gabriella and Vučetić, Filip",
year = "2019",
abstract = "The optimization of wear rate of the nanocomposites with A356 aluminium alloy matrix, reinforced with silicon carbide nanoparticles, was performed through the analysis of the following influences: wt% of the reinforcement, normal load and sliding speed. The nanocomposites were produced by the compocasting process with mechanical alloying preprocessing (ball milling). Three different amounts of SiC nanoparticles, with the same average size of 50 nm, were used as reinforcement, i.e. 0.2, 0.3 and 0.5 wt%. Tribological tests were performed on block-on-disc tribometer (line contact) under lubricated sliding conditions, at two sliding speeds (0.25 and 1 m/s), two normal loads (40 and 100 N) and at sliding distance of 1000 m. Analysis of variance (ANOVA) was applied to determine the influence of different parameters on wear value of tested nanocomposites. It was noticed from ANOVA analysis that normal load, with 33.39%, is the most significant factor affecting the wear rate of nanocomposites. The amount of reinforcement, with 28.90%, also has a significant influence on the wear rate, while the influence of sliding speed, with 23.82%, is smaller. It was found that the prediction of wear rate, by using regression model and Taguchi analysis, were close to the experimental values. © The Brazilian Society of Mechanical Sciences and Engineering 2018.",
journal = "Journal of the Brazilian Society of Mechanical Sciences and Engineering",
title = "Parametric optimization of the aluminium nanocomposites wear rate",
volume = "41",
number = "1",
pages = "19",
doi = "10.1007/s40430-018-1531-8"
}

Veličković, S., Stojanović, B., Babić, M., Vencl, A., Bobić, I., Vadaszne Bognar, G.,& Vučetić, F.. (2019). Parametric optimization of the aluminium nanocomposites wear rate. in Journal of the Brazilian Society of Mechanical Sciences and Engineering, 41(1), 19.
https://doi.org/10.1007/s40430-018-1531-8

Veličković S, Stojanović B, Babić M, Vencl A, Bobić I, Vadaszne Bognar G, Vučetić F. Parametric optimization of the aluminium nanocomposites wear rate. in Journal of the Brazilian Society of Mechanical Sciences and Engineering. 2019;41(1):19.
doi:10.1007/s40430-018-1531-8 .

Veličković, Sandra, Stojanović, Blaža, Babić, Miroslav, Vencl, Aleksandar, Bobić, Ilija, Vadaszne Bognar, Gabriella, Vučetić, Filip, "Parametric optimization of the aluminium nanocomposites wear rate" in Journal of the Brazilian Society of Mechanical Sciences and Engineering, 41, no. 1 (2019):19,
https://doi.org/10.1007/s40430-018-1531-8 . .

TY  - JOUR
AU  - Babić, Miroslav
AU  - Mitrovic, Slobodan
AU  - Živić, Fatima
AU  - Bobić, Ilija
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4012
AB  - In present study, the effect of Al2O3 particle reinforcement on the sliding behavior of ZA-27 alloy composites was investigated. The composites with 3, 5, and 10 wt% of Al2O3 particles were produced by the compocasting procedure. Tribological properties of unreinforced alloy and composite were studied, using block-on-disk tribometer under unlubricated sliding conditions at different specific loads and sliding speeds. The worn surfaces of samples were examined by the scanning electron microscopy (SEM). The test results revealed that those composite specimens exhibited significantly lower wear rate than the ZA-27 matrix alloy specimens in all combinations of applied loads and sliding speeds. The difference in the wear resistance of composite with respect to the matrix alloy, increased with the increase of the applied load/sliding speed and Al2O3 particle content. The highest degree of improvement of the ZA-27 alloy tribological behavior corresponded with change of the Al2O3 particles content from 3 to 5 wt%. At low sliding speed, moderate lower wear rate of the composites over that of the matrix alloy was noticed. This has been attributed to micro cracking tendency of the composites. Significantly reduced wear rate, experienced by the composite over that of the matrix alloy at the higher sliding speeds and loads, could be explained due to enhanced compatibility of matrix alloy with dispersoid phase and greater thermal stability of the composite in view of the presence of the dispersoid. Level of wear rate of tested ZA-27/Al2O3 samples pointed to the process of mild wear, which was primarily controlled by the formation and destruction of mechanical mixed layers (MMLs).
T2  - Tribology Letters
T1  - Wear Behavior of Composites Based on ZA-27 Alloy Reinforced by Al2O3 Particles Under Dry Sliding Condition
VL  - 38
IS  - 3
SP  - 337
EP  - 346
DO  - 10.1007/s11249-010-9613-5
ER  - 

@article{
author = "Babić, Miroslav and Mitrovic, Slobodan and Živić, Fatima and Bobić, Ilija",
year = "2010",
abstract = "In present study, the effect of Al2O3 particle reinforcement on the sliding behavior of ZA-27 alloy composites was investigated. The composites with 3, 5, and 10 wt% of Al2O3 particles were produced by the compocasting procedure. Tribological properties of unreinforced alloy and composite were studied, using block-on-disk tribometer under unlubricated sliding conditions at different specific loads and sliding speeds. The worn surfaces of samples were examined by the scanning electron microscopy (SEM). The test results revealed that those composite specimens exhibited significantly lower wear rate than the ZA-27 matrix alloy specimens in all combinations of applied loads and sliding speeds. The difference in the wear resistance of composite with respect to the matrix alloy, increased with the increase of the applied load/sliding speed and Al2O3 particle content. The highest degree of improvement of the ZA-27 alloy tribological behavior corresponded with change of the Al2O3 particles content from 3 to 5 wt%. At low sliding speed, moderate lower wear rate of the composites over that of the matrix alloy was noticed. This has been attributed to micro cracking tendency of the composites. Significantly reduced wear rate, experienced by the composite over that of the matrix alloy at the higher sliding speeds and loads, could be explained due to enhanced compatibility of matrix alloy with dispersoid phase and greater thermal stability of the composite in view of the presence of the dispersoid. Level of wear rate of tested ZA-27/Al2O3 samples pointed to the process of mild wear, which was primarily controlled by the formation and destruction of mechanical mixed layers (MMLs).",
journal = "Tribology Letters",
title = "Wear Behavior of Composites Based on ZA-27 Alloy Reinforced by Al2O3 Particles Under Dry Sliding Condition",
volume = "38",
number = "3",
pages = "337-346",
doi = "10.1007/s11249-010-9613-5"
}

Babić, M., Mitrovic, S., Živić, F.,& Bobić, I.. (2010). Wear Behavior of Composites Based on ZA-27 Alloy Reinforced by Al2O3 Particles Under Dry Sliding Condition. in Tribology Letters, 38(3), 337-346.
https://doi.org/10.1007/s11249-010-9613-5

Babić M, Mitrovic S, Živić F, Bobić I. Wear Behavior of Composites Based on ZA-27 Alloy Reinforced by Al2O3 Particles Under Dry Sliding Condition. in Tribology Letters. 2010;38(3):337-346.
doi:10.1007/s11249-010-9613-5 .

Babić, Miroslav, Mitrovic, Slobodan, Živić, Fatima, Bobić, Ilija, "Wear Behavior of Composites Based on ZA-27 Alloy Reinforced by Al2O3 Particles Under Dry Sliding Condition" in Tribology Letters, 38, no. 3 (2010):337-346,
https://doi.org/10.1007/s11249-010-9613-5 . .

TY  - JOUR
AU  - Babić, Miroslav
AU  - Vencl, Aleksandar
AU  - Mitrovic, Slobodan
AU  - Bobić, Ilija
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3795
AB  - The effects of heat treatment on the microstructure, hardness, tensile properties, and tribological behavior of ZA27 alloy were examined. The alloys were prepared by conventional melting and casting route. The heat treatment of samples included the heating up to 370 A degrees C for 3 or 5 h, quenching in water, and natural aging. Lubricated sliding wear test were conducted on as-cast and heat-treated ZA27 samples using block-on-disc machine. The friction and wear behavior of alloys were tested in contact with steel discs using combinations of three levels of load (10, 30, and 50 N) and three levels of linear sliding speeds (0.26, 0.50, and 1.00 m/s). To determine the wear mechanisms, the worn surfaces of the samples were examined by scanning electron microscopy (SEM). The heat treatment resulted in reduction in the hardness and tensile strength but increase in elongation. The heat-treated alloy samples attained improved tribological behavior over the as-cast ones, under all combinations of sliding speeds and contact loads. The rate of improvement increased with duration of solutionizing process before quenching in water. Obtained tribological results were related to the effects of heat treatment on microstructure changes of alloy.
T2  - Tribology Letters
T1  - Influence of T4 Heat Treatment on Tribological Behavior of Za27 Alloy Under Lubricated Sliding Condition
VL  - 36
IS  - 2
SP  - 125
EP  - 134
DO  - 10.1007/s11249-009-9467-x
ER  - 

@article{
author = "Babić, Miroslav and Vencl, Aleksandar and Mitrovic, Slobodan and Bobić, Ilija",
year = "2009",
abstract = "The effects of heat treatment on the microstructure, hardness, tensile properties, and tribological behavior of ZA27 alloy were examined. The alloys were prepared by conventional melting and casting route. The heat treatment of samples included the heating up to 370 A degrees C for 3 or 5 h, quenching in water, and natural aging. Lubricated sliding wear test were conducted on as-cast and heat-treated ZA27 samples using block-on-disc machine. The friction and wear behavior of alloys were tested in contact with steel discs using combinations of three levels of load (10, 30, and 50 N) and three levels of linear sliding speeds (0.26, 0.50, and 1.00 m/s). To determine the wear mechanisms, the worn surfaces of the samples were examined by scanning electron microscopy (SEM). The heat treatment resulted in reduction in the hardness and tensile strength but increase in elongation. The heat-treated alloy samples attained improved tribological behavior over the as-cast ones, under all combinations of sliding speeds and contact loads. The rate of improvement increased with duration of solutionizing process before quenching in water. Obtained tribological results were related to the effects of heat treatment on microstructure changes of alloy.",
journal = "Tribology Letters",
title = "Influence of T4 Heat Treatment on Tribological Behavior of Za27 Alloy Under Lubricated Sliding Condition",
volume = "36",
number = "2",
pages = "125-134",
doi = "10.1007/s11249-009-9467-x"
}

Babić, M., Vencl, A., Mitrovic, S.,& Bobić, I.. (2009). Influence of T4 Heat Treatment on Tribological Behavior of Za27 Alloy Under Lubricated Sliding Condition. in Tribology Letters, 36(2), 125-134.
https://doi.org/10.1007/s11249-009-9467-x

Babić M, Vencl A, Mitrovic S, Bobić I. Influence of T4 Heat Treatment on Tribological Behavior of Za27 Alloy Under Lubricated Sliding Condition. in Tribology Letters. 2009;36(2):125-134.
doi:10.1007/s11249-009-9467-x .

Babić, Miroslav, Vencl, Aleksandar, Mitrovic, Slobodan, Bobić, Ilija, "Influence of T4 Heat Treatment on Tribological Behavior of Za27 Alloy Under Lubricated Sliding Condition" in Tribology Letters, 36, no. 2 (2009):125-134,
https://doi.org/10.1007/s11249-009-9467-x . .