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首页> 外文期刊>Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear >The effect of retained austenite stability on impact-abrasion wear resistance in carbide-free bainitic steels
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The effect of retained austenite stability on impact-abrasion wear resistance in carbide-free bainitic steels

机译：保留奥氏体稳定性对无铁贝氏体钢抗冲击耐磨性耐磨性的影响

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摘要

The effect of retained austenite stability on impact-abrasion wear resistance was investigated. Using an impact-abrasion wear testing machine, it was demonstrated that a high mechanical stability of retained austenite brought about improved wear resistance in bainite steels. However, the wear resistance worsened when the retained austenite stabilization was sufficient to suppress the transformation of retained austenite to martensite. The retained austenite not only enhanced the hardness of the contact surface, but also resisted crack opening and propagation by deformation and transformation. Furthermore, material removal by microcutting and micro-cracking were the dominant contributions to mass loss during impact-abrasive wear. Therefore, a wear model was developed based on cutting and fracture mechanisms, and the hardness and fracture toughness were the key factors that dominated the impact-abrasion wear resistance.
机译：研究了保留奥氏体稳定性对耐冲击耐磨性耐磨性的影响。 使用冲击磨损试验机，证明了保留奥氏体的高机械稳定性引起了贝氏体钢的改善耐磨性。 然而，当保留的奥氏体稳定性足以抑制保留奥氏体转化到马氏体时，耐磨性恶化。 保留的奥氏体不仅提高了接触表面的硬度，而且通过变形和转化来抵抗裂缝开口和传播。 此外，通过微包和微裂纹除去材料是抗冲击磨损期间质量损失的主要贡献。 因此，基于切割和断裂机制开发了磨损模型，硬度和断裂韧性是主导抗冲击耐磨性的关键因素。

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