The structure of retained austenite in wear-resistant steels 150KhNML and Kh12MFL of pearlitic and ledeburitic classes is studied under the conditions of abrasive wear after different variants of heat treatment. The working surfaces of the steels are subjected to electron microscope transmission analysis. It is shown that the retained austenite formed as a result of high-temperature quenching (1100 – 1170°C) is metastable and transforms in the wear process into fine- and nanocrystalline strain martensite with regular periodic arrangement of crystals in addition to slip and twinning. This provides a high capacity of the working surface for friction hardening. The optimum mode of heat treatment for formation of a dissipative structure with high abrasive wear resistance is chosen.

中文翻译：

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亚稳态奥氏体耗散结构的形成以提高珠光体和莱氏体钢的耐磨性

对珠光体和莱氏体类耐磨钢 150KhNML 和 Kh12MFL 中残余奥氏体的结构进行了研究，该钢在经过不同热处理后的磨粒磨损条件下。钢的工作表面经过电子显微镜透射分析。结果表明，高温淬火（1100-1170°C）形成的残余奥氏体是亚稳态的，并在磨损过程中转变为细晶和纳米晶应变马氏体，除滑移和孪晶外，晶体具有规则的周期性排列. 这提供了用于摩擦硬化的工作表面的高容量。选择用于形成具有高耐磨耗性的耗散结构的最佳热处理模式。