Effect of Cr Content on the Compression Properties and Abrasive Wear Behavior of the High-Volume Fraction(TiC–TiB_2)/Cu Composites  

作　　者：Feng Qiu Yue Han Ai Cheng Jianbang Lu Qichuan Jiang 

机构地区：[1]Key Laboratory of Automobile Materials,Ministry of Education,Department of Materials Science and Engineering,Jilin University

出　　处：《Acta Metallurgica Sinica(English Letters)》2014年第5期951-956,共6页金属学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (Nos.51171071,50971065 and No.50531030);National Basic Research Program of China No.2012CB619600);the Research Fund for the Doctoral Program of Higher Education of China (No.20130061110037);the Project 985–High Performance Materials of Jilin University

摘　　要：The （TiC-TiB2）/Cu composites with 50 vol% TiC-TiB2 ceramic particles were successfully fabricated by the combustion synthesis and hot press consolidation in a Cu-Ti-B4C-Cr system. The effects of the Cr content on the microstructures, hardness, compression properties, and abrasive wear behaviors of the composites were investigated. The final products consist of only Cu, TiC, and TiB2 phases, and the ceramic particles are distributed uniformly in these composites. The size of the ceramic particles decreases with Cr addition. As the Cr content increases, the yield strength, ultimate compression strength, microhardness, and abrasive wear resistance of the composites increase, and the fracture strain decreases.The （TiC-TiB2）/Cu composites with 50 vol% TiC-TiB2 ceramic particles were successfully fabricated by the combustion synthesis and hot press consolidation in a Cu-Ti-B4C-Cr system. The effects of the Cr content on the microstructures, hardness, compression properties, and abrasive wear behaviors of the composites were investigated. The final products consist of only Cu, TiC, and TiB2 phases, and the ceramic particles are distributed uniformly in these composites. The size of the ceramic particles decreases with Cr addition. As the Cr content increases, the yield strength, ultimate compression strength, microhardness, and abrasive wear resistance of the composites increase, and the fracture strain decreases.

关 键 词：Metal matrix composites Powder metallurgy Combustion synthesis Abrasive wear 

分 类 号：TB333[一般工业技术—材料科学与工程]