Metal matrix nanocomposites（MMnCs）comprise a metal matrix filled with nanosized reinforcements with physical and mechanical properties that are very different from those of the matrix.In ZA-27 alloy-based nanocomposites,the metal matrix provides ductility and toughness,while usually used ceramic reinforcements give high strength and hardness.Tested ZA-27 alloy-based nanocomposites,reinforced with different types（Si C and Al2O3）,amounts（0.2 wt.%,0.3 wt.%,and 0.5 wt.%）and sizes（25 nm,50 nm,and 100 nm）of nanoparticles were produced through the compocasting process with mechanical alloying pre-processing（ball milling）.It was previously shown that the presence of nanoparticles in ZA-27 alloy-based nanocomposites led to the formation of a finer structure in the nanocomposites matrix and an improvement in the basic mechanical properties（hardness and compressive yield strength）through the enhanced dislocation density strengthening mechanism.Solid particle erosive wear testing demonstrated that these improvements were followed with an increase in the erosive wear resistance of tested nanocomposites,as well.Additionally,by analyzing the influences of type,amount,and size of nanoparticles on the erosive wear resistance of nanocomposites,it was demonstrated that there is an optimal amount of nanoparticles,which in our case is 0.3 wt.%,and that the presence of SiC nanoparticles and smaller nanoparticles in nanocomposites had more beneficial influence on erosive wear resistance.
类型: 期刊论文
作者: Aleksandar VENCL,Ilija BOBI?,Biljana BOBI?,Kristina JAKIMOVSKA,Petr SVOBODA,Mara KANDEVA
来源: Friction 2019年04期
年度: 2019
分类: 工程科技Ⅱ辑,工程科技Ⅰ辑
专业: 材料科学,机械工业
单位: Faculty of Mechanical Engineering,University of Belgrade,Institute of Nuclear Sciences "Vinca",University of Belgrade,Institute of Chemistry,Technology and Metallurgy,University of Belgrade,Faculty of Mechanical Engineering in Skopje,Ss.Cyril and Methodius University,Faculty of Mechanical Engineering,Brno University of Technology,Faculty of Industrial Technology,Technical University of Sofia
基金: the projects TR 34028,TR 35021,and OI 172005,supported by the Republic of Serbia,Ministry of Education,Science and Technological Development,the project LO1202,funded by the MEYS under the National Sustainability Programme I,the project ДН 07,28-15.12.2016,funded by the National Science Fund of the Ministry of Education and Science,Bulgaria
分类号: TB33;TH117.1
页码: 340-350
总页数: 11
文件大小: 3450K
下载量: 14
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