摩擦耦合变形条件下奥氏体不锈钢的摩擦学性能研究  

Tribological Properties of Austenitic Stainless Steel under the Condition of Friction Coupling Deformation

作　　者：薛宗玉[1] 周升[1] 韦习成[1] 

机构地区：[1]上海大学材料科学与工程学院,上海200072

出　　处：《摩擦学学报》2009年第5期405-411,共7页Tribology

基　　金：国家自然科学基金资助项目(50675128)

摘　　要：利用自制的摩擦耦合变形试验装置,对SUS304亚稳奥氏体不锈钢带在摩擦耦合变形条件下与淬火回火DC53冷作模具钢的往复摩擦性能进行了研究,分析了带试样的塑性变形规律及相变特征,并对其磨损形貌进行了SEM观察.结果表明,摩擦系数随载荷的增加呈现先增后减的特点;摩擦系数随滑动速率的增加而减小,且所有试验条件下的摩擦系数均随试验进程表现出先减小后趋于稳定的规律.不锈钢试样在试验过程中的变形量与时间之间存在对数函数关系,且其摩擦中心区域的塑性变形大于端部变形量,其磨损机理以黏着磨损和磨粒磨损为主.该研究对亚稳奥氏体不锈钢在实际加工成形过程中的工艺优化具有一定的指导意义.A self - made friction tester was used to investigate the tribological properties of SUS304 metastable stainless steel against DC53 under the condition of friction coupling deformation. Plastic deformation, microstructure and wear morphology were analyzed to understand the tribological properties of austenitic stainless steel. Results showed that friction coefficient firstly increased and then decreased with increasing of normal load. However, it reduced as sliding speed increased. Plastic deformation of stainless steel with testing duration followed a logarithmic function. The main wear mechanisms of austenitic stainless steel were adhesive wear and abrasive wear.

关 键 词：摩擦耦合变形 奥氏体不锈钢 摩擦系数 

分 类 号：TH117.3[机械工程—机械设计及理论]