M2高速钢高速干摩擦特性研究  

Friction and Wear Characteristics of M2 High Speed Steel at High Speed Dry Sliding Condition

作　　者：罗霞[1] 张永振[1] 陈跃[1] 铁喜顺[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003

出　　处：《中国表面工程》2005年第1期30-33,共4页China Surface Engineering

基　　金：国家自然科学基金项目(50375046)

摘　　要：在 MMS-1G 高温高速摩擦试验机上进行 M2 高速钢的高速干滑动摩擦磨损试验。用热电偶测量并计算摩擦面的摩擦温度,用 XRD 方法分析磨损前后试样摩擦面的合金相组成。利用 SEM 观察并分析摩擦面磨损形貌及磨损机理。结果表明:M2 高速钢在高速干摩擦条件下,随着速度的增加,摩擦因数降低,磨损率达到最大值后降低。当摩擦热累积达到一定值后,摩擦表面产生严重塑性变形甚至形成润滑薄膜,同时伴有新相析出。The friction and wear Characteristics of M2 steel (dry sliding against GCr15 steel) were investigated on the MMS-1G high speed and high temperature wear tester under the conditions of velocity(3 m/s ~ 50 m/s )and contact load (50 N^250 N). Friction temperatures of pin were recorded by NiCr-NiSi thermoelectric couple. The various wear micromechanisms and tribo-metallographic phases were studied, using scanning electron microscopy and X-ray diffraction. The results show that friction coefficient of frictional pair declines with increasing load and speed. Wear rate drops after attaining a maximum. There appear phase transformations, plastic deformation and ductile fracture of the HSS when temperature reaches a certain degree.

关 键 词：M2高速钢 高速干滑动 摩擦磨损性能 摩擦热 

分 类 号：TH117[机械工程—机械设计及理论]