【摘要】 采用显微硬度和Ｘ射线分析，研究了Ｍｎ－Ｃｕ－Ｍｏ白口铸铁中残余奥氏体（γＲ）的磨损硬化能力。结果表明：磨损面的显微硬度展示了γＲ固有的磨损硬化能力，其实质是γＲ晶粒内存在着微观应变、高密度位错以及亚晶和胞状亚结构。而γＲ的相变强化与磨损状况密切相关。更多还原

【Abstract】 The wear hardening ability of residual austenite ( γ R) of Mn Cu Mo white cast iron was investigated by microhardness and X ray analysis. Experiment results have shown that the microhardness of worn surface displays the intrinsic deformation hardening ability of γ R. The point is that there are microstrain, high density dislocation, and sub grain and cellular sub structure in the γ R grain. The strengthening of phase transformation of γ R is closely correlated with abrasive wearing situation.更多还原