T10钢的干滑动摩擦学行为与晶粒尺寸的关系  

Relationship Between Dry Sliding Tribological Behavior and Grain Sizes for T10 Steel

作　　者：周路海[1] 韦习成[1] 王春燕[1] 鲁军 王武荣[1] ZHOU Luhai;WEI Xicheng;WANG Chunyan;LU Jun;WANG Wurong(School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China;The FALAB Test Co., Ltd, Suzhou 215024, China)

机构地区：[1]上海大学材料科学与工程学院,上海200072 [2]苏州华碧微科检测技术有限公司,苏州215024

出　　处：《材料研究学报》2017年第11期833-838,共6页Chinese Journal of Materials Research

基　　金：国家自然科学基金(50975166;51475280)~~

摘　　要：使用面面接触的盘-销试验机研究T10钢与涤纶配副的干滑动摩擦学性能,分析了钢的磨损行为与奥氏体晶粒尺寸的关系。结果表明,T10钢的奥氏体晶粒尺寸从1次淬火的32 mm减小到5次淬火的约5 mm,强度和韧性得到明显提高,而其应变硬化指数略有减小。晶粒细化基本上不影响T10钢与涤纶配副的干滑动摩擦系数,但是其耐磨性明显提高。具有较小应变硬化指数的细晶钢的磨损表面优良的摩擦诱发硬化特性,是其耐磨性提高的主要原因。T10钢的磨损机理,主要是犁削伴随的轻微接触疲劳磨损。The relationship between the dry sliding tribological performance of T10 steel disc against polyester pin in surface contact and the austenite grain size of the steel was investigated using a MM-W1 universal tester. The results show that the austenite grain size of T10 steel after five cycle-quenching is only 5 μm, which is much smaller than 32 μm of the one after one cycle-quenching. Grain refinement efficiently improves the strength and toughness of the steel,while slightly decreases its strain-hardening index. Although the grain refinement does not enhance the hardness of the steel but decrease the friction coefficient of friction couples of polyester/T10 steel, therewith the wear resistance of the steel increases remarkably. It is thought that the wear resistance improvement of T10 steel with fine grain and lower strain-hardening capability is benefited from the strong friction-induced hardening of the worn surface layer. The wear mechanism is mainly plough wear with accompanying slight contact fatigue wear.

关 键 词：材料失效与保护 摩擦学性能 T10钢 晶粒尺寸 应变硬化指数 

分 类 号：TH117.1[机械工程—机械设计及理论]