Cr/Mo对油润滑下Fe3Al磨损行为的影响  

Effect of Cr/Mo on Wear Behavior of Fe3Al under Lubrication

作　　者：白亚平[1] 李建平[1] 郭永春[1] 罗佳佳 李亮亮 BAI Yaping;LI Jianping;GUO Yongchun;LUO Jiajia;LI Liangliang(School of Materials and Chemical Engineering,Xi’an TechnologicalUniversity,Xi’an 710021,China)

机构地区：[1]西安工业大学材料与化工学院

出　　处：《西安工业大学学报》2019年第3期324-329,共6页Journal of Xi’an Technological University

基　　金：国家自然科学基金资助项目(51705391);陕西省教育厅专项科学研究计划(17JK0383);陕西省创新人才推进计划-科技创新团队(2017KCT-05);装备预研领域基金重点项目(6140922010301)

摘　　要：为了研究Cr/Mo对油润滑下Fe3Al磨损行为的影响,本文通过机械合金化与热压烧结相结合的方法制备x(Cr)=5%和x(Mo)=2%的Fe3Al基合金块状试样,并对不同Fe3Al基合金的显微组织和油润滑状态下的磨损行为进行了相关研究,结果表明:合金元素Cr、Mo均可改善Fe3Al材料微观组织均匀性,Cr和Mo双元素的添加对Fe3Al材料显微组织分布均匀性改善最为明显;力学性能分析结果表明:Mo元素能够增强Fe3Al基合金的硬度、抗压强度和韧性,Cr元素对其韧性改善的更为明显;磨损行为测试结果可得:合金元素Mo的添加可有效改善材料油润滑状态下的磨损性能,降低试样的摩擦系数和磨损率,且磨损表面波高仅约Fe3Al材料的1/3。The study is intended to explore the effect of Cr/Mo on the wear behavior of Fe 3Al under lubrication.Fe 3Al based alloys with x (Cr)=5% and x (Mo)=2% were prepared by combining mechanical alloying and hot pressing sintering methods,with their microstructure and wear behavior under lubrication analyzed.The results show that the alloying elements Cr and Mo can improve microstructure uniformity of Fe 3Al material.Especially,the addition of Cr and Mo elements together can significantly improve the distribution uniformity of the microstructure of Fe 3Al material.The analysis of mechanical properties shows that Mo element can enhance the hardness,compressive strength and toughness of Fe 3Al alloys,and Cr element can improve their toughness obviously.Wear behavior test results show that the addition of alloying element Mo can effectively improve the wear resistance of Fe 3Al alloys and reduce their friction coefficient and wear rate,the wear surface height being only about one third Fe 3Al material.

关 键 词：FE3AL基合金 Cr/Mo合金元素 热压烧结 显微组织 磨损性能 

分 类 号：TG146.2[一般工业技术—材料科学与工程]