朱留平,孙勇,庞学东,迟宏宵,谷金波,杨银辉

• 1:昆明理工大学材料科学与工程学院
• 2:钢铁研究总院有限公司特殊钢研究院
• 3:抚顺特殊钢股份有限公司

摘要(Abstract)：

采用金相显微镜、扫描电镜、显微硬度计、X射线衍射和摩擦磨损试验等研究了不同Cr含量(13.5、10和8 mass%)对Cr-Co-Mo-Ni渗碳轴承钢渗层组织、硬度及耐磨性的影响。结果表明：Cr含量显著影响渗层组织中形成的碳化物类型、含量和尺寸；随着Cr含量降低，碳化物含量逐渐降低，且碳化物类型逐渐由粗大的M_(23)C_6相转变为细小的M_7C_3和M_6C相；随着Cr含量降低，渗碳层的硬度和有效硬化层深度同时增加，主要是由于较高的Cr含量对C原子的扩散产生更强的拖曳作用，显著降低C的扩散能力；随着Cr含量降低，试验钢的耐磨性逐渐升高，相比于碳化物含量，显微硬度对耐磨性的影响更大。

关键词(KeyWords)： 渗碳轴承钢;组织;碳化物;硬度;耐磨性能

Abstract:

Keywords:

基金项目(Foundation): 国家科技重大专项资助项目(J2019-Ⅵ-0019-0134)

作者(Author): 朱留平,孙勇,庞学东,迟宏宵,谷金波,杨银辉

DOI: 10.13289/j.issn.1009-6264.2024-0225

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