热处理对高速激光熔覆不锈钢熔覆层组织性能的影响

doi:10.13251/j.issn.0254-6051.2023.02.043

金属热处理 ›› 2023, Vol. 48 ›› Issue (2): 276-283.DOI: 10.13251/j.issn.0254-6051.2023.02.043

热处理对高速激光熔覆不锈钢熔覆层组织性能的影响

翁益青¹, 薛瑞雷¹, 满蛟¹, 高枫¹, 周建平¹, 陈艳华², 韩永红³

1.新疆大学机械工程学院, 新疆乌鲁木齐 830017;
2.新疆大学理化测试中心, 新疆乌鲁木齐 830017;
3.北京考佩特煤机设备有限公司, 北京 102102

收稿日期:2022-09-06 修回日期:2022-12-04 出版日期:2023-02-25 发布日期:2023-03-22
通讯作者: 满蛟,副教授,博士,E-mail:manjiao@xju.edu.cn
作者简介:翁益青(1995—),男,硕士研究生,主要研究方向为高速激光熔覆成形工艺,E-mail:wengyqsy@foxmail.com。
基金资助:
新疆维吾尔自治区高层次人才天池计划(100400028);新疆大学博士启动基金(620320011)

Effect of heat treatment on microstructure and properties of stainless steel coating by high-speed laser cladding

Weng Yiqing¹, Xue Ruilei¹, Man Jiao¹, Gao Feng¹, Zhou Jianping¹, Chen Yanhua², Han Yonghong³

1. School of Mechanical Engineering, Xinjiang University, Urumqi Xinjiang 830017, China;
2. Institute of Experimental Center, Xinjiang University, Urumqi Xinjiang 830017, China;
3. Beijing Kopet Coal Equipment Co., Ltd., Beijing 102102, China

Received:2022-09-06 Revised:2022-12-04 Online:2023-02-25 Published:2023-03-22

摘要/Abstract

摘要： 通过高速激光熔覆技术在27SiMn钢表面制备了不锈钢熔覆层,并对熔覆层进行了热处理。对熔覆层热处理前后的组织形貌与结构进行表征,并对熔覆层的显微硬度、摩擦磨损性能、冲击性能以及耐蚀性进行试验与分析。研究表明,熔覆层主要存在BCC相组成的α-(Fe,Cr),M₇C₃、M₂₃C₆碳化物以及Cr₃Si强化相;经过热处理后,熔覆层晶粒得到显著细化且分布更加均匀。热处理后熔覆层的硬度较未热处理时提高不明显,但硬度分布更为平缓,平均硬度达到446 HV0.2;磨损率下降1.7×10^-5 mm³·(N·m)^-1,冲击性能提高28.6%,自腐蚀电流密度仅为热处理前的9.19%。

关键词: 高速激光熔覆, 不锈钢, 热处理, 组织, 力学性能, 耐蚀性

Abstract: Stainless steel coating was prepared on the surface of 27SiMn steel by high-speed laser cladding technology, and the coating was subsequently heat treated. The morphology and microstructure of the coating before and after heat treatment were characterized, and the microhardness, frictional wear properties, impact property and corrosion resistance of the specimens were tested and analyzed. The results show that the coating are mainly composed of α-(Fe,Cr), carbides such as M₇C₃, M₂₃C₆, and Cr₃Si reinforced phases. For the coating after heat treatment, the grains of the coating are significantly refined and distributed more uniformly; the hardness is not significantly higher than that without heat treatment, but the hardness distribution is smoother, and the average hardness reaches 446 HV0.2; the wear rate decreases by 1.7×10^-5 mm³·(N·m)^-¹, the impact property increases by 28.6%, and the self corrosion current density is only 9.19% of that before heat treatment.

Key words: high-speed laser cladding, stainless steel, heat treatment, microstructure, mechanical properties, corrosion resistance

中图分类号:

翁益青, 薛瑞雷, 满蛟, 高枫, 周建平, 陈艳华, 韩永红. 热处理对高速激光熔覆不锈钢熔覆层组织性能的影响[J]. 金属热处理, 2023, 48(2): 276-283.

Weng Yiqing, Xue Ruilei, Man Jiao, Gao Feng, Zhou Jianping, Chen Yanhua, Han Yonghong. Effect of heat treatment on microstructure and properties of stainless steel coating by high-speed laser cladding[J]. Heat Treatment of Metals, 2023, 48(2): 276-283.

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热处理对高速激光熔覆不锈钢熔覆层组织性能的影响

Effect of heat treatment on microstructure and properties of stainless steel coating by high-speed laser cladding

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