Abstract Sliding wear performance of carbide-free bainitic steel is significantly affected by microstructure. This investigation is an attempt to find a correlation between microstructure and wear resistance of carbide-free bainitic steel and compare the results with that of a conventional tempered martensitic microstructure. Under predominantly adhesive wear conditions, carbide-free bainitic microstructure with the highest amount of retained austenite offers the best wear resistance. This is mainly attributed to the more pronounced work hardening and TRIP-effect of carbide-free bainitic microstructure austempered at higher temperature. Therefore, higher initial bulk hardness is not the only indicator of wear resistance. Moreover, when both oxidation and adhesion are active, a microstructure with an optimum content of retained austenite and bainitic ferrite shows the highest wear resistance.

中文翻译：

---

残余奥氏体对纳米结构无碳化物贝氏体钢黏附主导磨损的影响

摘要 无碳化物贝氏体钢的滑动磨损性能受显微组织的影响很大。本研究试图找出无碳化物贝氏体钢的显微组织与耐磨性之间的相关性，并将结果与​​传统回火马氏体显微组织的结果进行比较。在主要粘附磨损条件下，具有最高残留奥氏体量的无碳化物贝氏体微观结构提供最佳耐磨性。这主要归因于在较高温度下等温回火的无碳化物贝氏体显微组织更显着的加工硬化和 TRIP 效应。因此，较高的初始体积硬度并不是耐磨性的唯一指标。此外，当氧化和粘附都活跃时，