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  - Vencl, Aleksandar
AU  - Vučetić, Filip
AU  - Bobić, Biljana M.
AU  - Pitel, Ján
AU  - Bobić, Ilija
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8448
AB  - The influence of SiC microparticles reinforcement and graphite macroparticles addition on the friction and wear characteristics of A356 Al-Si alloys, produced by compocasting, has been assessed using a pin-on-disc tribometer. The incorporation of SiC reinforcement increased the coefficient of friction and reduced the wear. The addition of graphite did not reduce the coefficient of friction. In the case of hybrid composite with 1 wt% graphite, wear was more or less the same as with SiC reinforced composite, while in the case of hybrid composite with 3 wt% graphite, wear was further reduced. On the worn surfaces of hybrid composites, the presence of the discontinuous mixed surface layer, containing graphite and transferred counter-body material, was noticed. © 2018, Springer-Verlag London Ltd., part of Springer Nature.
T2  - The International Journal of Advanced Manufacturing Technology
T1  - Tribological characterisation in dry sliding conditions of compocasted hybrid A356/SiCp/Grp composites with graphite macroparticles
VL  - 100
IS  - 9-12
SP  - 2135
EP  - 2146
DO  - 10.1007/s00170-018-2866-0
ER  - 

@article{
author = "Vencl, Aleksandar and Vučetić, Filip and Bobić, Biljana M. and Pitel, Ján and Bobić, Ilija",
year = "2019",
abstract = "The influence of SiC microparticles reinforcement and graphite macroparticles addition on the friction and wear characteristics of A356 Al-Si alloys, produced by compocasting, has been assessed using a pin-on-disc tribometer. The incorporation of SiC reinforcement increased the coefficient of friction and reduced the wear. The addition of graphite did not reduce the coefficient of friction. In the case of hybrid composite with 1 wt% graphite, wear was more or less the same as with SiC reinforced composite, while in the case of hybrid composite with 3 wt% graphite, wear was further reduced. On the worn surfaces of hybrid composites, the presence of the discontinuous mixed surface layer, containing graphite and transferred counter-body material, was noticed. © 2018, Springer-Verlag London Ltd., part of Springer Nature.",
journal = "The International Journal of Advanced Manufacturing Technology",
title = "Tribological characterisation in dry sliding conditions of compocasted hybrid A356/SiCp/Grp composites with graphite macroparticles",
volume = "100",
number = "9-12",
pages = "2135-2146",
doi = "10.1007/s00170-018-2866-0"
}

Vencl, A., Vučetić, F., Bobić, B. M., Pitel, J.,& Bobić, I.. (2019). Tribological characterisation in dry sliding conditions of compocasted hybrid A356/SiCp/Grp composites with graphite macroparticles. in The International Journal of Advanced Manufacturing Technology, 100(9-12), 2135-2146.
https://doi.org/10.1007/s00170-018-2866-0

Vencl A, Vučetić F, Bobić BM, Pitel J, Bobić I. Tribological characterisation in dry sliding conditions of compocasted hybrid A356/SiCp/Grp composites with graphite macroparticles. in The International Journal of Advanced Manufacturing Technology. 2019;100(9-12):2135-2146.
doi:10.1007/s00170-018-2866-0 .

Vencl, Aleksandar, Vučetić, Filip, Bobić, Biljana M., Pitel, Ján, Bobić, Ilija, "Tribological characterisation in dry sliding conditions of compocasted hybrid A356/SiCp/Grp composites with graphite macroparticles" in The International Journal of Advanced Manufacturing Technology, 100, no. 9-12 (2019):2135-2146,
https://doi.org/10.1007/s00170-018-2866-0 . .

TY  - JOUR
AU  - Vencl, Aleksandar
AU  - Bobić, Biljana M.
AU  - Vučetić, Filip
AU  - Svoboda, Petr
AU  - Popović, Vladimir M.
AU  - Bobić, Ilija
PY  - 2018
UR  - http://link.springer.com/10.1007/s40430-018-1441-9
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7911
AB  - Nanocomposites were synthesized via compocasting using Zn25Al3Si and Zn25Al3Si0.03Sr alloys as the matrices and nanoparticles of Al2O3 (1 wt%) as the reinforcement. Structure of the nanocomposites was examined, and their basic mechanical and tribological properties were tested. Distribution of primary silicon particles in the structure of nanocomposites has been improved compared to their distribution in the Zn25Al3Si matrix alloy due to the presence of Al2O3 nanoparticles and strontium. The primary silicon particles in the structure of the nanocomposites were found to be more fine-grained compared to the same particles in the structure of the as-cast Zn25Al3Si alloy. Tested mechanical properties of the nanocomposite with Zn25Al3Si alloy matrix are improved, compared to the matrix alloy. The nanocomposite with Zn25Al3Si0.03Sr alloy matrix is characterized with slightly higher value of compressive yield strength and a slightly lower hardness value compared to the as-cast Zn25Al3Si alloy. Both nanocomposites showed lower wear rate and higher coefficient of friction, compared to the matrix alloy, in sliding under the boundary lubricating regime. However, the nanocomposite with Zn25Al3Si alloy matrix showed better tribological properties than the nanocomposite with Zn25Al3Si0.03Sr alloy matrix. © 2018, The Brazilian Society of Mechanical Sciences and Engineering.
T2  - Journal of the Brazilian Society of Mechanical Sciences and Engineering
T1  - Effect of Al2O3 nanoparticles and strontium addition on structural, mechanical and tribological properties of Zn25Al3Si alloy
VL  - 40
IS  - 11
SP  - 513
DO  - 10.1007/s40430-018-1441-9
ER  - 

@article{
author = "Vencl, Aleksandar and Bobić, Biljana M. and Vučetić, Filip and Svoboda, Petr and Popović, Vladimir M. and Bobić, Ilija",
year = "2018",
abstract = "Nanocomposites were synthesized via compocasting using Zn25Al3Si and Zn25Al3Si0.03Sr alloys as the matrices and nanoparticles of Al2O3 (1 wt%) as the reinforcement. Structure of the nanocomposites was examined, and their basic mechanical and tribological properties were tested. Distribution of primary silicon particles in the structure of nanocomposites has been improved compared to their distribution in the Zn25Al3Si matrix alloy due to the presence of Al2O3 nanoparticles and strontium. The primary silicon particles in the structure of the nanocomposites were found to be more fine-grained compared to the same particles in the structure of the as-cast Zn25Al3Si alloy. Tested mechanical properties of the nanocomposite with Zn25Al3Si alloy matrix are improved, compared to the matrix alloy. The nanocomposite with Zn25Al3Si0.03Sr alloy matrix is characterized with slightly higher value of compressive yield strength and a slightly lower hardness value compared to the as-cast Zn25Al3Si alloy. Both nanocomposites showed lower wear rate and higher coefficient of friction, compared to the matrix alloy, in sliding under the boundary lubricating regime. However, the nanocomposite with Zn25Al3Si alloy matrix showed better tribological properties than the nanocomposite with Zn25Al3Si0.03Sr alloy matrix. © 2018, The Brazilian Society of Mechanical Sciences and Engineering.",
journal = "Journal of the Brazilian Society of Mechanical Sciences and Engineering",
title = "Effect of Al2O3 nanoparticles and strontium addition on structural, mechanical and tribological properties of Zn25Al3Si alloy",
volume = "40",
number = "11",
pages = "513",
doi = "10.1007/s40430-018-1441-9"
}

Vencl, A., Bobić, B. M., Vučetić, F., Svoboda, P., Popović, V. M.,& Bobić, I.. (2018). Effect of Al2O3 nanoparticles and strontium addition on structural, mechanical and tribological properties of Zn25Al3Si alloy. in Journal of the Brazilian Society of Mechanical Sciences and Engineering, 40(11), 513.
https://doi.org/10.1007/s40430-018-1441-9

Vencl A, Bobić BM, Vučetić F, Svoboda P, Popović VM, Bobić I. Effect of Al2O3 nanoparticles and strontium addition on structural, mechanical and tribological properties of Zn25Al3Si alloy. in Journal of the Brazilian Society of Mechanical Sciences and Engineering. 2018;40(11):513.
doi:10.1007/s40430-018-1441-9 .

Vencl, Aleksandar, Bobić, Biljana M., Vučetić, Filip, Svoboda, Petr, Popović, Vladimir M., Bobić, Ilija, "Effect of Al2O3 nanoparticles and strontium addition on structural, mechanical and tribological properties of Zn25Al3Si alloy" in Journal of the Brazilian Society of Mechanical Sciences and Engineering, 40, no. 11 (2018):513,
https://doi.org/10.1007/s40430-018-1441-9 . .

TY  - JOUR
AU  - Vencl, Aleksandar
AU  - Bobić, Ilija
AU  - Vučetić, Filip
AU  - Bobić, Biljana M.
AU  - Ružić, Jovana
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/144
AB  - The ZA-27 alloy is a zinc-aluminium casting alloy that has been frequently used as the material for sleeves of plain bearings. It has good physical, mechanical and tribological properties. However, one of the major disadvantages is its dimensional instability over a period of time (ageing). To overcome this, copper in the alloy may be replaced with silicon. Coarsening of silicon particles can be controlled by a suitable addition of strontium. In this paper, the commercial ZA-27 alloy and six different Zn25Al alloys (with 1 and 3 wt.% silicon; and with 0, 0.03 and 0.05 wt.% strontium) were obtained by casting in the pre-heated steel mould. Casting of the alloys was carried out at a laboratory level. In the alloys containing silicon, a finer dendritic structure was noticed compared to the structure of the commercial ZA-27 alloy. The addition of strontium influenced the size and distribution of primary silicon particles. Needle-like particles of eutectic silicon were changed into the fibrous ones. The presence of silicon and strontium did not significantly affect mechanical properties of the obtained Zn25Al alloys compared to mechanical properties of the commercial ZA-27 alloy. Wear rate of the alloys containing silicon was lower than that of the ZA-27 alloy. The addition of strontium further lowers the wear rate and slightly increases the coefficient of friction. (C) 2014 Elsevier Ltd. All rights reserved.
T2  - Materials and Design
T1  - Structural, mechanical and tribological characterization of Zn25Al alloys with Si and Sr addition
VL  - 64
SP  - 381
EP  - 392
DO  - 10.1016/j.matdes.2014.07.056
ER  - 

@article{
author = "Vencl, Aleksandar and Bobić, Ilija and Vučetić, Filip and Bobić, Biljana M. and Ružić, Jovana",
year = "2014",
abstract = "The ZA-27 alloy is a zinc-aluminium casting alloy that has been frequently used as the material for sleeves of plain bearings. It has good physical, mechanical and tribological properties. However, one of the major disadvantages is its dimensional instability over a period of time (ageing). To overcome this, copper in the alloy may be replaced with silicon. Coarsening of silicon particles can be controlled by a suitable addition of strontium. In this paper, the commercial ZA-27 alloy and six different Zn25Al alloys (with 1 and 3 wt.% silicon; and with 0, 0.03 and 0.05 wt.% strontium) were obtained by casting in the pre-heated steel mould. Casting of the alloys was carried out at a laboratory level. In the alloys containing silicon, a finer dendritic structure was noticed compared to the structure of the commercial ZA-27 alloy. The addition of strontium influenced the size and distribution of primary silicon particles. Needle-like particles of eutectic silicon were changed into the fibrous ones. The presence of silicon and strontium did not significantly affect mechanical properties of the obtained Zn25Al alloys compared to mechanical properties of the commercial ZA-27 alloy. Wear rate of the alloys containing silicon was lower than that of the ZA-27 alloy. The addition of strontium further lowers the wear rate and slightly increases the coefficient of friction. (C) 2014 Elsevier Ltd. All rights reserved.",
journal = "Materials and Design",
title = "Structural, mechanical and tribological characterization of Zn25Al alloys with Si and Sr addition",
volume = "64",
pages = "381-392",
doi = "10.1016/j.matdes.2014.07.056"
}

Vencl, A., Bobić, I., Vučetić, F., Bobić, B. M.,& Ružić, J.. (2014). Structural, mechanical and tribological characterization of Zn25Al alloys with Si and Sr addition. in Materials and Design, 64, 381-392.
https://doi.org/10.1016/j.matdes.2014.07.056

Vencl A, Bobić I, Vučetić F, Bobić BM, Ružić J. Structural, mechanical and tribological characterization of Zn25Al alloys with Si and Sr addition. in Materials and Design. 2014;64:381-392.
doi:10.1016/j.matdes.2014.07.056 .

Vencl, Aleksandar, Bobić, Ilija, Vučetić, Filip, Bobić, Biljana M., Ružić, Jovana, "Structural, mechanical and tribological characterization of Zn25Al alloys with Si and Sr addition" in Materials and Design, 64 (2014):381-392,
https://doi.org/10.1016/j.matdes.2014.07.056 . .