代桂林,刘洋,李国平

• 1:宁波大学机械工程与力学学院

摘要(Abstract)：

采用光学显微镜(OM)、扫描电镜(SEM)、背散射电子衍射(EBSD)和维氏硬度计等研究了一步淬火-配分(Q&P)处理对20CrMnTi钢显微组织和性能的影响。结果表明:一步Q&P热处理后的试验钢显微组织为马氏体和少量残留奥氏体。随着配分温度的升高和配分时间的延长,残留奥氏体含量先增加再减少,维氏硬度先降低再升高。对一步Q&P热处理后的试验钢进行干滑动摩擦磨损试验。结果表明:在小载荷(10 N)和残留奥氏体含量较低(<5%)的条件下,残留奥氏体含量越高,试验钢的耐磨性越差,磨损机理主要是磨粒磨损、黏着磨损和氧化磨损。

关键词(KeyWords)： 20CrMnTi钢;一步淬火-配分;残留奥氏体;干滑动摩擦;磨损机理

Abstract:

Keywords:

基金项目(Foundation): 宁波市科技创新2025重大专项(2018B10007,2019B10078)

作者(Author): 代桂林,刘洋,李国平

DOI: 10.13289/j.issn.1009-6264.2021-0290

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