磁场深冷处理对42CrMo钢耐磨性的影响

doi:10.13251/j.issn.0254-6051.2020.01.018

金属热处理 ›› 2020, Vol. 45 ›› Issue (1): 91-95.DOI: 10.13251/j.issn.0254-6051.2020.01.018

磁场深冷处理对42CrMo钢耐磨性的影响

蒋一江, 闫献国, 陈峙, 侯强, 陈志刚

太原科技大学机械工程学院, 山西太原 030024

收稿日期:2019-07-10 出版日期:2020-01-25 发布日期:2020-04-03
通讯作者: 闫献国,教授,博士,主要从事先进制造技术研究,联系电话:13903418620,E-mail:762730915@qq.com
作者简介:蒋一江(1993—),男,硕士研究生,主要从事先进制造技术研究,联系电话:15751886909,E-mail:821020524@qq.com。

Effect of magnetic cryogenic treatment on wear resistance of 42CrMo steel

Jiang Yijiang, Yan Xianguo, Chen Zhi, Hou Qiang, Chen Zhigang

School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan Shanxi 030024, China

Received:2019-07-10 Online:2020-01-25 Published:2020-04-03

摘要/Abstract

摘要： 基于深冷处理提供的温度场和永磁体提供的匀强磁场,对42CrMo合金钢进行磁场深冷处理,并与常规工艺和深冷处理工艺进行了对比分析。结果表明:磁冷工艺在深冷处理工艺的基础上进一步提高了42CrMo钢的耐磨性,磁冷工艺处理材料的耐磨性较常规工艺和深冷工艺分别提高约26.7%和22.2%。这是由于深冷处理使得残留奥氏体进一步转化为马氏体;深冷处理也使得过饱和马氏体析出大量碳生成碳化物;深冷处理中磁场的存在对α-Fe晶格的作用使过饱和马氏体析出碳的方向得到优化,回火屈氏体在磁场方向致密聚集,耐磨性提高。

关键词: 磁场, 深冷处理, 42CrMo钢, 耐磨性

Abstract: Based on the temperature field provided by the cryogenic treatment and the uniform magnetic field provided by the permanent magnet, 42CrMo alloy steel was heat treated by magnetic cold field cryogenic process, and then compared with 42CrMo treated by conventional process and cryogenic treatment. The results show that the magnetic cooling process further improves the wear resistance of 42CrMo material on the basis of the cryogenic treatment process. The wear resistance of the magnetic cooling process is about 26.7% and 22.2% higher than that of the conventional process and the cryogenic process, respectively. The cryogenic treatment provides a temperature field that further converts the retained austenite to martensite; The cryogenic treatment also causes the supersaturated martensite to precipitate a large amount of carbon and form a large amount of carbides. The presence of a magnetic field in the cryogenic treatment acts on the α-Fe lattice, which optimizes the direction of carbon precipitation from supersaturated martensite, and the tempered troostite gathers compactly in the direction of magnetic field and improves the wear resistance.

Key words: magnetic field, cryogenic treatment, 42CrMo steel, wear resistance

中图分类号:

TG156.91

蒋一江, 闫献国, 陈峙, 侯强, 陈志刚. 磁场深冷处理对42CrMo钢耐磨性的影响[J]. 金属热处理, 2020, 45(1): 91-95.

Jiang Yijiang, Yan Xianguo, Chen Zhi, Hou Qiang, Chen Zhigang. Effect of magnetic cryogenic treatment on wear resistance of 42CrMo steel[J]. HTM, 2020, 45(1): 91-95.

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磁场深冷处理对42CrMo钢耐磨性的影响

Effect of magnetic cryogenic treatment on wear resistance of 42CrMo steel

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