摘要
采用超景深金相显微镜、扫描电镜和透射电镜研究了T10和20Cr Mn Ti钢配副干滑动摩擦试验后的摩擦影响层结构,利用有限元模拟计算了摩擦影响层的温度场,并探讨了其形成机制。研究表明:在T10钢及20Cr Mn Ti钢的磨损表面下均形成了不同厚度、由机械混合层和塑性变形层组成的摩擦影响层。在干滑动摩擦过程中,表层材料的严重塑性变形及摩擦温升的双重作用诱发了摩擦影响层晶粒的显著细化。
The microstructure of sliding friction-induced deformation layers （SFIDLs） of normalized T10 steel against quenched and tempered 20CrMnTi steel after dry sliding friction were investigated using OM, SEM and TEM. The temperature in the SFIDL was simulated by FEM. The formation mechanisms were discussed. The results show that for both T10 and 20CrMnTi steels, their SFIDLs could be divided into mechanically mixed layers and plastic deformation layers with depth. The remarkably refined grains in the wear surface layer of both T10 steel and 20CrMnTi steel are observed, which are considered to be the joint action of severe plastic deformation and friction temperature rise in the surface materials during dry sliding friction.
出处
《热加工工艺》
CSCD
北大核心
2015年第16期138-141,145,共5页
Hot Working Technology
基金
2014年上海市优秀青年教师计划(ZZSDJ14007)
2015年上海市科技创新计划(15ZZ104)
2015年上海市扬帆计划(15YF1404400)
关键词
干滑动摩擦
摩擦影响层
塑性变形
晶粒细化
钢
dry sliding friction
friction-induced deformation layer
plastic deformation
grain refinement
steel
