胡锋,向源,梁灿棉,张永康

• 1:广东工业大学机电工程学院
• 2:广东星联精密机械有限公司
• 3:武汉科技大学高性能钢铁材料及其应用省部共建协同创新中心

摘要(Abstract)：

研究了H13模具钢的常规马氏体(油淬火+580℃回火)和无碳化物贝氏体(300℃等温处理)的相变行为，以及显微组织对其冲击磨损性能的影响。结果表明：试验钢经贝氏体等温后形成了由板条状贝氏体铁素体和残留奥氏体组成的无碳化物贝氏体组织；贝氏体铁素体+残留奥氏体组织的冲击磨损性能在磨损后期(1.5和2.0 h)优于马氏体组织。这是由于马氏体组织容易产生微裂纹，产生大量犁削，从而导致耐磨性能降低，而无碳化物贝氏体组织在冲击磨损过程中使表层发生剧烈的塑性变形，诱导微观组织中的残留奥氏体转变成α相铁素体，能够阻止试验钢基体在冲击磨损过程中产生切削，从而提高其耐磨性。

关键词(KeyWords)： 模具钢;无碳化物贝氏体;残留奥氏体;冲击磨损;磨损机制

Abstract:

Keywords:

基金项目(Foundation): 中国博士后科学基金(2021M700875)

作者(Author): 胡锋,向源,梁灿棉,张永康

DOI: 10.13289/j.issn.1009-6264.2022-0428

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