ABSTRACT The wear resistance of carbon-free bainitic steel obtained by isothermal transformation is studied and compared with untempered martensite in this paper. The experimental steel obtained carbide-free bainite after austempered for 3 h at 310oC. The wear surface of carbon-free bainitic steel and martensite steel is mainly composed of grooves, and micro-ploughing is the main wear mechanism. The wear resistance of carbon-free bainite is better than that of martensite beyond 400 cycles. The retained austenite of the surface in carbon-free bainitic steel transforms into martensite, leading to enhance the wear resistance of the carbide-free bainite.

中文翻译：

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中碳钢中无碳贝氏体和马氏体的耐磨性研究

摘要 本文研究了等温转变得到的无碳贝氏体钢的耐磨性，并与未回火马氏体进行了比较。试验钢在 310℃下等温 3 小时后得到无碳化物贝氏体。无碳贝氏体钢和马氏体钢的磨损表面主要由沟槽组成，微犁沟是主要的磨损机制。无碳贝氏体的耐磨性在400次循环后优于马氏体。无碳贝氏体钢表面的残余奥氏体转变为马氏体，从而提高了无碳贝氏体的耐磨性。