本文研究了GCr15钢(M+B)复合组织润滑滑动磨损特性及磨损表面层深(纵横截面)的Hm分布,用OM和sEM进行组织观察,并以同等硬度的常规处理的淬-回火组织作为比较,观察分析稳定磨损过程中磨损表面层磨屑形成和剥落,形变硬化及其流变带的形成,相变淬火层的产生及基体组织马氏体的衰变,碳化物的碎化等情况,并对磨损机理加以探讨。 In this paper, the Hm distribution of the lubricating and wear characteristics of GCr15 steel (M + B) composite microstructure and depth (cross-section) of the worn surface layer were studied. The OM and sEM were used to observe the microstructure and the quenched and tempered microstructure As a comparison, we observed and analyzed the formation and exfoliation of wear debris, the formation of hardening debris and the formation of rheological bands, the generation of phase transformation quenching layer and the degeneration of matrix martensite and the reduction of carbides in the process of stable wear , And to explore the mechanism of wear.