ZG230-450铸钢表面激光熔覆铁基涂层的组织与性能

doi:10.13251/j.issn.0254-6051.2025.12.045

金属热处理 ›› 2025, Vol. 50 ›› Issue (12): 297-301.DOI: 10.13251/j.issn.0254-6051.2025.12.045

ZG230-450铸钢表面激光熔覆铁基涂层的组织与性能

王聪¹, 宋付成^2,3, 董友斌¹, 宋文康¹, 卢兵⁴, 吴君良¹, 刘福运^2,3, 檀财旺^2,3

1.中车工业研究院(青岛)有限公司, 山东青岛 266000;
2.哈尔滨工业大学材料结构精密焊接与连接全国重点实验室, 黑龙江哈尔滨 150001;
3.哈尔滨工业大学(威海) 山东省特种焊接技术重点实验室, 山东威海 264209;
4.武汉科技大学冶金与能源学院, 湖北武汉 430065

收稿日期:2025-09-01 修回日期:2025-11-08 发布日期:2026-01-06
作者简介:王聪(1989—),男,高级工程师,博士研究生,主要研究方向为激光增材与激光热处理,E-mail:wangcongcumt@163.com
基金资助:
国家自然科学基金(U2468212);中车重大科研计划(2024CKA297);中车重点科研计划(2023CXB510)

Microstructure and properties of iron-based coating on surface of ZG230-450 cast steel by laser cladding

Wang Cong¹, Song Fucheng^2,3, Dong Youbin¹, Song Wenkang¹, Lu Bing⁴, Wu Junliang¹, Liu Fuyun^2,3, Tan Caiwang^2,3

1. CRRC Industrial Research Institute (Qingdao) Co., Ltd., Qingdao Shandong 266000, China;
2. State Key Laboratory of Precision Welding & Joining of Materials and Structures, Harbin Institute of Technology, Harbin Heilongjiang 150001, China;
3. Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai Shandong 264209, China;
4. School of Metallurgy and Energy, Wuhan University of Science and Technology, Wuhan Hubei 430065, China

Received:2025-09-01 Revised:2025-11-08 Published:2026-01-06

摘要/Abstract

摘要： 通过显微组织观察,硬度、拉伸性能、冲击性能和耐磨性能测试,研究了ZG230-450铸钢表面激光熔覆铁基涂层的组织与性能。结果表明,涂层与基材形成良好冶金结合,无裂纹,气孔缺陷,涂层组织为均匀、细小的马氏体。铁基涂层的硬度、抗拉强度、冲击吸收能量和耐磨性均优于基材,其中硬度和耐磨性提升较明显。相较于基材,涂层硬度(441 HV0.5)提高了1.49倍,摩擦因数从0.642下降到0.593,最大磨损深度从37.5 μm下降到19.78 μm。

关键词: 激光熔覆, 铁基涂层, 微观组织, 硬度, 耐磨性

Abstract: Microstructure and properties of iron-based coatings on ZG230-450 cast steel surface by laser cladding were investigated through microstructure observation, hardness, tensile properties, impact property, and wear resistance tests. The results show that the coating forms metallurgical bond with the substrate, free of cracks and porosity defects, and the coating microstructure consists of uniform and fine martensite. The hardness, tensile strength, impact absorbed energy, and wear resistance of the iron-based coatings are superior to those of the substrate, with a significant improvement in hardness and wear resistance. Compared to the substrate, the hardness of the coating (441 HV0.5) is increased by 1.49 times, the friction coefficient is reduced from 0.642 to 0.593, and the maximum wear depth is decreased from 37.5 μm to 19.78 μm.

Key words: laser cladding, iron-based coating, microstructure, hardness, wear resistance

中图分类号:

TG174.4

王聪, 宋付成, 董友斌, 宋文康, 卢兵, 吴君良, 刘福运, 檀财旺. ZG230-450铸钢表面激光熔覆铁基涂层的组织与性能[J]. 金属热处理, 2025, 50(12): 297-301.

Wang Cong, Song Fucheng, Dong Youbin, Song Wenkang, Lu Bing, Wu Junliang, Liu Fuyun, Tan Caiwang. Microstructure and properties of iron-based coating on surface of ZG230-450 cast steel by laser cladding[J]. Heat Treatment of Metals, 2025, 50(12): 297-301.

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ZG230-450铸钢表面激光熔覆铁基涂层的组织与性能

Microstructure and properties of iron-based coating on surface of ZG230-450 cast steel by laser cladding

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