热处理对Fe-Cr-Ni低碳马氏体不锈钢组织及性能的影响

doi:10.13251/j.issn.0254-6051.2020.10.023

金属热处理 ›› 2020, Vol. 45 ›› Issue (10): 114-118.DOI: 10.13251/j.issn.0254-6051.2020.10.023

热处理对Fe-Cr-Ni低碳马氏体不锈钢组织及性能的影响

许荣君^1,2, 田伟光^1,2,3, 徐佳林^1,2,3, 陆海飞^1,3, 殷延雄^1,2

1.广东广青金属科技有限公司, 广东阳江 529533;
2.广东省高端不锈钢研究院有限公司, 广东阳江 529533;
3.广东省高品质不锈钢技术研发企业重点实验室, 广东阳江 529533

收稿日期:2020-04-05 出版日期:2020-10-25 发布日期:2020-12-29
通讯作者: 陆海飞,工程师,硕士,E-mail: Luhaifei90@163.com
作者简介:许荣君(1993—),男,硕士,主要研究方向为钢铁冶金新工艺,E-mail:xurongj@csu.edu.cn。
基金资助:
广东省科技计划(2018B030323018);广东省扬帆计划引进创新创业团队项目(2017YT05C047)

Effect of heat treatment on microstructure and properties of Fe-Cr-Ni low carbon martensitic stainless steel

Xu Rongjun^1,2, Tian Weiguang^1,2,3, Xu Jialin^1,2,3, Lu Haifei^1,3, Yin Yanxiong^1,2

1. Guangdong Guangqing Metal Technology Co., Ltd., Yangjiang Guangdong 529533, China;
2. Guangdong High-end Stainless Steel Research Institute Co., Ltd., Yangjiang Guangdong 529533, China;
3. Guangdong Provincial Key Laboratory of High Quality Stainless Steel Technology Research and Development,Yangjiang Guangdong 529533, China

Received:2020-04-05 Online:2020-10-25 Published:2020-12-29

摘要/Abstract

摘要： 通过真空电弧熔炼方法制备了Fe-13Cr-3.5Ni不锈钢,并系统研究了不同热处理工艺对其微观组织以及硬度的影响。结果表明:熔炼态Fe-13Cr-3.5Ni不锈钢为典型的板条状马氏体组织;经过不同温度固溶和回火处理(600 ℃)后,其组织结构由板条状马氏体和少量残留奥氏体组成,残留奥氏体含量随着固溶温度的升高先增加后减少,而硬度值先降低后升高,硬度最低值为101.5 HRB;在1000 ℃淬火并在不同温度回火后其组织结构由回火板条状马氏体以及残留奥氏体组成,在650 ℃以下回火时,随着回火温度的升高奥氏体含量逐渐增多,当回火温度达700 ℃时,残留奥氏体含量下降,其洛氏硬度值随着回火温度的升高先降低后升高,其硬度值在99~107 HRB范围内。

关键词: 马氏体不锈钢, 热处理, 残留奥氏体, 显微组织, 硬度

Abstract: Fe-13Cr-3.5Ni stainless steel was prepared by vacuum arc melting method, and the effects of different heat treatment processes on its microstructure and hardness were systematically studied. The results show that the Fe-13Cr-3.5Ni stainless steel in smelting-casting state is of typical lath martensite structure. After solid solution treatment at different temperatures and tempered at 600 ℃, the steel consists of lath martensite and a small amount of retained austenite. The content of retained austenite increases firstly and then decreases with the increase of solution treatment temperature, but the hardness firstly decreases and then increases, with the minimum hardness being 101.5 HRB. After quenched at 1000 ℃ and tempered at different temperatures, the steel microstructure is composed of tempered lath martensite and retained austenite. When tempered below 650 ℃, the austenite content gradually increases with the increase of tempering temperature. When the tempering temperature reaches 700 ℃, the retained austenite content decreases, and the Rockwell hardness decreases first and then increases with the increase of tempering temperature, and is in the range of 99-107 HRB.

Key words: martensitic stainless steel, heat treatment, retained austenite, microstructure, hardness

中图分类号:

TG161

许荣君, 田伟光, 徐佳林, 陆海飞, 殷延雄. 热处理对Fe-Cr-Ni低碳马氏体不锈钢组织及性能的影响[J]. 金属热处理, 2020, 45(10): 114-118.

Xu Rongjun, Tian Weiguang, Xu Jialin, Lu Haifei, Yin Yanxiong. Effect of heat treatment on microstructure and properties of Fe-Cr-Ni low carbon martensitic stainless steel[J]. Heat Treatment of Metals, 2020, 45(10): 114-118.

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热处理对Fe-Cr-Ni低碳马氏体不锈钢组织及性能的影响

Effect of heat treatment on microstructure and properties of Fe-Cr-Ni low carbon martensitic stainless steel

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