刘金超,王文焱,谢敬佩,刁晓刚,魏伟,程艳艳,季齐宝,常乐怡

• 1:河南科技大学材料科学与工程学院
• 2:有色金属共性技术河南省协同创新中心
• 3:中信重工洛阳重铸铁业有限责任公司

摘要(Abstract)：

采用扫描电镜(SEM)、透射电镜(TEM)、X射线衍射(XRD)等研究了多次回火处理对经正火+淬火处理的中碳中铬合金钢组织及性能的影响。结果表明：980℃淬火后合金钢的组织为淬火马氏体，经550℃一次回火及二次回火处理后，组织转变为回火索氏体；回火过程中析出的碳化物主要为M_(23)C_6及M_3C型合金碳化物，分布于基体及界面处，起到了析出强化的作用；与一次回火处理相比，二次回火处理后合金钢的硬度与抗拉强度基本不变，但冲击吸收能量提高了15%,断后伸长率提高了12.5%,表现出较好的综合力学性能。

关键词(KeyWords)： 铬钼钢;二次回火;析出强化;力学性能

Abstract:

Keywords:

基金项目(Foundation): 河南省杰出人才创新基金(2016HNYXTD);; 河南省重大攻关项目(6020091020132-1)

作者(Author): 刘金超,王文焱,谢敬佩,刁晓刚,魏伟,程艳艳,季齐宝,常乐怡

DOI: 10.13289/j.issn.1009-6264.2022-0284

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