Fe-0.03Te-0.3Pb-0.9Mn易切削不锈钢润滑滚动磨损机理研究  

Lubricated Rolling Wear Mechanism Study on Fe-0.03Te-0.3Pb-0.9Mn Free-cutting Stainless Steel

作　　者：何银花[1] 王发展[1,2] 王哲[1] 王永嘉[2] 焦炜[2] 韩双宗 

机构地区：[1]西安建筑科技大学材料与矿资学院,西安710055 [2]西安建筑科技大学机电工程学院,西安710055

出　　处：《材料工程》2015年第10期85-90,共6页Journal of Materials Engineering

基　　金：十二五期间国家科技支撑计划项目(2011BAE31B02)

摘　　要：采用润滑滚动磨损实验测试Fe-0.03Te-0.3Pb-0.9Mn易切削不锈钢的表面摩擦磨损特性。比较不同磨损时间球珠作用下合金表面磨损形貌、体系硬度、摩擦因数和磨损体积的差异,并对其润滑滚动磨损机理进行深入研究。结果表明:磨损启动期,合金表面磨损性能相对稳定,在MnS和Pb等易切削相交互作用下,合金表面犁削底部开始产生裂纹;磨损稳定期,合金表面性能逐渐变化,犁削底部裂纹持续生长,交织的裂纹开始产生片状或块状凸起物;磨损失效期,合金表面润滑膜和剥落物大量脱落,剥落物形成磨料磨损,犁削逐渐贯通消失,合金表面体系相结构快速瓦解。The friction and wear characteristics of Fe-0.03Te-0.3Pb-0.9Mn free-cutting stainless steel were investigated using a lubricated rolling wear testing apparatus.The wear morphology,hardness,friction coefficient and wear volume of alloy surface were compared in different wear time,its mechanism of lubricated rolling wear was studied further.The results show that,at the beginning of wear,the performance of alloy surface wear is relatively stable,under the interaction of free-cutting phase,such as MnS and Pb,that cracks occur at the alloy surface plough bottom;When the wear is stable,the performance of alloy surface changed gradually,the cracks of plough bottom continue growing,interweaved cracks begin to generate flake or block convex parts;When the wear is over,the alloy surface lubrication film and exfoliation numerous are flaking off,exfoliation formed abrasive wear,plough disappeared step by step,the alloy surface system is collapsed rapidly.

关 键 词：Fe-0.03Te-0.3Pb-0.9Mn合金 微观组织 润滑滚动磨损 易切削不锈钢 

分 类 号：TG146[一般工业技术—材料科学与工程]