朱春燕,石楠楠,左鹏鹏,闵娜,吴晓春

• 1:上海大学材料科学与工程学院
• 2:上海大学微结构重点实验室

摘要(Abstract)：

基于不同Mn和W含量的4Cr2Mo2W2V热锻模具钢的回火特性曲线,以及在620℃不同保温时间的力学性能,揭示了不同Mn和W含量下4Cr2Mo2W2V钢中碳化物的演变规律,并探讨其对该钢高温性能的影响。同时,结合Johnson-Mehl-Avrami(JMA)方程分析了合金元素Mn和W对回火稳定性动力学过程的影响。结果表明,Mn和W元素的增加使4Cr2Mo2W2V钢的二次硬化峰向右移动,热稳定实验与理论分析结果一致,Mn和W元素能有效抑制碳化物粗大,增强马氏体的抗回复能力。

关键词(KeyWords)： 热稳定性;马氏体热锻模具钢;JMA方程

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51171104);; 国家青年科学基金(51301100)

作者(Author): 朱春燕,石楠楠,左鹏鹏,闵娜,吴晓春

DOI: 10.13289/j.issn.1009-6264.2014.s2.016

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