纳米TiC颗粒增强Al-Cu-Li基复合材料摩擦磨损性能的研究  

Investigation on Frictional Wear Performance of Nano-TiC Particles Enhanced Al-Cu-Li Matrix Composites

作　　者：邱伟男 周东帅 王健 百志好[1] 张晨 徐旭 QIU Wei-nan;ZHOU Dong-shuai;WANG Jian;BAI Zhi-hao;ZHANG Chen;XU Xu(School of Materials Engineering,Jiangsu University of Technology,Changzhou 213000,Jiangsu,China;College of Mechanical and Electrical Engineering,Hohai University,Changzhou 213022,Jiangsu,China)

机构地区：[1]江苏理工学院材料工程学院,江苏常州213000 [2]河海大学机电工程学院,江苏常州213022

出　　处：《铸造》2023年第4期401-408,共8页Foundry

基　　金：常州市科技计划资助(CJ20220061)。

摘　　要：采用中间合金法制备TiC颗粒增强Al-Cu-Li基复合材料,通过GCr15钢球与复合材料在室温下干摩擦滑动磨损实验,研究不同含量TiC与载荷对复合材料摩擦磨损性能的影响。试验结果表明:TiC颗粒细化了复合材料组织,同时也提高了热处理后复合材料的硬度及耐磨损性能,在TiC含量为0.3%时,复合材料表现出优异的耐磨损性能。通过观察磨损后表面形貌,低载荷下主要磨损类型为磨粒磨损和黏着磨损,随着载荷的提高,氧化磨损和循环力引起的疲劳剥落成为了主要磨损类型。随着TiC颗粒的加入,提高了复合材料的硬度,降低了动摩擦系数,黏着磨损得到了抑制,复合材料的耐磨损性能得到了提高。The TiC particle-reinforced Al-Cu-Li matrix composites were prepared by the master alloy method and the effects of different TiC contents and loads on the frictional wear properties of the composites were investigated by dry frictional sliding wear experiments at room temperature between GCr15 steel balls and the composites.The experimental results showed that the TiC particles refined the microstructure of the composites and also improved the hardness and wear resistance of the composites after heat treatment.When the content of the TiC was 0.3%,it showed excellent wear resistance.By observing the surface morphology after wear,the main types of wear at low loads were abrasive wear and adhesive wear,and as the load increased,oxidative wear and fatigue spalling caused by cyclic forces became the main types of the wear.With the addition of the TiC particles,the hardness of the composites increased,the coefficient of dynamic friction reduced,adhesive wear was suppressed and the wear resistance of the composites was improved.

关 键 词：TiC/Al-Cu-Li基复合材料 TiC纳米颗粒 摩擦磨损性能 磨损机制 

分 类 号：TB331[一般工业技术—材料科学与工程]