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含亚稳残余奥氏体HSLA TR IP钢的摩擦磨损性能研究 被引量:16

Tribological Characteristics of HSLA TRIP Steel Containing Meta-Stable Retained Austenite
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摘要 在SST-ST型销-盘摩擦磨损试验机上对特殊工艺热处理、成分为0.22C-1.50S i-1.65M n的新型相变诱发塑性(HSLA S i-M n系TR IP)钢的摩擦磨损性能进行研究,采用X射线衍射技术分析了摩擦过程中钢中残余奥氏体的变形诱发转变行为.结果表明,在本试验条件下,与相同成分并在两相区双相化处理的双相钢相比,TR IP钢具有较低摩擦系数和较好耐磨性.由于HSLA S i-M n系TR IP钢中亚稳残余奥氏体在摩擦应力作用下的变形诱发相变作用,使得其磨损区的大量残余奥氏体向马氏体转变,一方面松弛了磨损表面的内应力,另一方面转变的马氏体使基体强化,从而使其具有较好摩擦磨损特性. Friction and wear characteristics of a new Transformation-induced plasticity (TRIP) steel containing 0. 22C-1.50Si-1. 65Mn used in automotive construction parts was studied on SST-ST Disc-Pin friction tester. Volume fraction of friction-induced metastable retained austenite transformed to martensite in the wear trace was measured by using X-ray diffractometer. Results show that TRIP steel exhibited lower friction coefficient and better wear resistance than that of dual-phase steel containing same composition and volume fraction of ferrite. Because of triple-stress state during friction testing, an amount of retained austenite in the center of wear zone transformed to martensite compared to the non-wear zone which results in relaxing inter-stress and transformed martensite strengthening the surface layer, consequently, improving the friction and wear properties. Research on TRIP steel illustrates that one can effectively use deformationinduced transformation of meta-stable austenite during friction to improve tribological performance of materials.
出处 《摩擦学学报》 EI CAS CSCD 北大核心 2006年第1期49-53,共5页 Tribology
基金 上海市科委自然科学基金资助项目(03ZR14035) 上海市教委基金资助项目(03K027) 香港城市大学CityUHK项目资助(7001726)
关键词 变形诱发相变 残余奥氏体 马氏体 摩擦磨损性能 deformation-induced transformation, retained austenite, matensite, friction and wear behavior
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