金属热处理 ›› 2020, Vol. 45 ›› Issue (9): 96-98.DOI: 10.13251/j.issn.0254-6051.2020.09.017

• 工艺研究 • 上一篇    下一篇

冷处理对42CrMo钢硬度和耐磨性的影响

张海东1, 闫献国1, 陈峙1, 赵敏娜1, 高源1, 李俊吉1, 李晋峰2, 高丽梅2   

  1. 1.太原科技大学 机械工程学院,山西 太原 030024;
    2.晋西车轴股份有限公司,山西 太原 030027
  • 收稿日期:2020-03-27 出版日期:2020-09-25 发布日期:2020-12-29
  • 作者简介:张海东(1986—),男,博士研究生,主要研究方向为先进制造技术,E-mail:bitman@126.com
  • 基金资助:
    国家自然科学基金(51675363);太原科技大学博士启动基金(20182042)

Effect of cryogenic treatment on hardness and wear resistance of 42CrMo steel

Zhang Haidong1, Yan Xianguo1, Chen Zhi1, Zhao Minna1, Gao Yuan1, Li Junji1, Li Jinfeng2, Gao Limei2   

  1. 1. School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan Shanxi 030024,China;
    2. Jinxi Axle Co.,Ltd.,Taiyuan Shanxi 030027,China
  • Received:2020-03-27 Online:2020-09-25 Published:2020-12-29

摘要: 在42CrMo钢常规处理的基础上增加了冷处理,研究浅冷处理和深冷处理对42CrMo钢硬度和耐磨性的影响。结果表明,经浅冷处理和深冷处理后,42CrMo钢中残留奥氏体向马氏体发生转变,且碳化物析出增多,致使钢的硬度和耐磨性均有提升,且深冷处理后硬度和耐磨性提升幅度高于浅冷处理。

关键词: 42CrMo钢, 冷处理, 硬度, 耐磨性, 微观组织

Abstract: Based on the conventional treatment of 42CrMo steel,cryogenic treatment was added.Effects of shallow cryogenic treatment and deep cryogenic treatment on hardness and wear resistance of 42CrMo steel were studied.The results show that after shallow cryogenic treatment and deep cryogenic treatment,the retained austenite in 42CrMo steel transforms to martensite,and the precipitation of carbides increases,which leads to the improvement of hardness and wear resistance of the steel,and the improvement extent of hardness and wear resistance after deep cryogenic treatment is higher than that of shallow cryogenic treatment.

Key words: 42CrMo steel, cryogenic treatment, hardness, wear resistance, microstructure

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