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利用金相、Ｘ射线、扫描电子显微镜等手段研究了Ｃｒ１２钢中残余奥氏体的形变诱发马氏体相变对耐磨性能的影响，探讨了强化机制．结果表明，Ｃｒ１２钢经１１５０℃淬火得到大量处于变塑状态的残余奥氏体，并在磨损过程中发生形变诱发马氏体相变，使表面硬度和耐磨性显著提高，超过常规的９８０℃淬火．残余奥氏体对耐磨性的强化，为逐层诱发马氏体的循环强化机制．
The influence of deformation-induced martensitic transformation on the wear resistance of retained austenite in Cr12 steel was studied by means of metallography, X-ray and scanning electron microscopy. The strengthening mechanism was also discussed. The results show that a large amount of retained austenite in the as-cast state is obtained after quenching at 1150 ℃ for Cr12 steel, and deformation-induced martensitic transformation occurs during the wear. The surface hardness and wear resistance of the Cr12 steel are remarkably improved, exceeding conventional 980 ℃ Quenching. Residual austenite on the wear resistance enhancement, martensite layer by layer induced by the cycle of strengthening mechanism.