激光熔覆Stellite6+WC复合涂层对不锈钢叶片耐水蚀性能的影响

doi:10.13251/j.issn.0254-6051.2024.05.042

金属热处理 ›› 2024, Vol. 49 ›› Issue (5): 243-251.DOI: 10.13251/j.issn.0254-6051.2024.05.042

激光熔覆Stellite6+WC复合涂层对不锈钢叶片耐水蚀性能的影响

邓德伟¹, 万泓明¹, 汪红所¹, 陈文博¹, 连世伟²

1.大连理工大学材料科学与工程学院辽宁省激光3D打印装备及应用专业技术创新中心, 辽宁大连 116024;
2.大连船用阀门有限公司, 辽宁大连 116026

收稿日期:2023-08-20 修回日期:2024-03-14 出版日期:2024-05-25 发布日期:2024-06-28
作者简介:邓德伟(1974—),男,副教授,博士,主要研究方向为高端装备再制造、材料表面工程及金属3D打印等,E-mail:deng@dlut.edu.cn。
基金资助:
高端阀产业技术协同创新中心基金(2022DMV003);辽宁省激光3D打印装备及应用专业技术创新中心基金(DUT2022031)

Effect of laser clad Stellite6+WC composite coating on water erosion resistance of stainless steel blades

Deng Dewei¹, Wan Hongming¹, Wang Hongsuo¹, Chen Wenbo¹, Lian Shiwei²

1. Research Center of Laster 3D Printing Equipment and Application Engineering Technology Liaoning Province, School of Materials Science and Engineering, Dalian University of Technology, Dalian Liaoning 116024, China;
2. Dalian Marine Valve Co., Ltd., Dalian Liaoning 116026, China

Received:2023-08-20 Revised:2024-03-14 Online:2024-05-25 Published:2024-06-28

摘要/Abstract

摘要： 采用激光熔覆的方法在17-4PH不锈钢表面熔覆一层Stellite6+WC复合涂层。通过正交试验获得适合Stellite6合金的最佳熔覆参数,然后在该熔覆参数下向涂层中加入不同含量的WC粉末。借助光学显微镜、显微硬度计以及盐雾腐蚀试验箱,对比研究了WC的加入以及激光淬火技术对熔覆层的显微组织、维氏硬度以及耐盐雾腐蚀性能的影响。结果表明:最佳熔覆参数为激光功率1500 W,激光扫描速度18 mm/s,焦距13 mm;WC质量分数在30%以内时,随着WC含量的增加,Stellite6+WC熔覆层的显微硬度和耐盐雾腐蚀性能逐步增加;当WC质量分数大于30%时,熔覆层的显微硬度和耐盐雾腐蚀性能继续提高,但相较于WC质量分数为30%的熔覆层提高不明显;激光淬火处理对熔覆层的显微硬度和耐盐雾腐蚀性能均具有一定的改善,相较于1000 W激光淬火,3000 W激光淬火后涂层的耐盐雾腐蚀性能并没有得到进一步提升。

关键词: 激光熔覆, 激光淬火, 显微组织, 显微硬度, 盐雾腐蚀性能

Abstract: Stellite6+WC composite coating was deposited on the surface of 17-4PH stainless steel by using laser cladding method. The optimal cladding parameters suitable for Stellite6 alloy were obtained through orthogonal experiments, and then different contents of WC powder were added to the coating under these cladding parameters. By using optical microscope, microhardness tester and salt spray corrosion test chamber, the effects of WC addition and laser quenching technology on the microstructure, Vickers hardness, and salt spray corrosion resistance of the clad coating were compared and studied. The results indicate that the optimal cladding parameters are laser power of 1500 W, laser scanning speed of 18 mm/s, and focal distance of 13 mm. When the mass fraction of WC is within 30%, the microhardness and salt spray corrosion resistance of the Stellite6+WC clad coating gradually increase with the increase of WC content. However, when the mass fraction of WC is higher than 30%, the microhardness and salt spray corrosion resistance of the clad coating are not significantly improved compared to that of the cladding with 30%WC. Although the laser quenching process improves the microhardness and salt spray corrosion resistance of the cladding to some extent, the salt spray corrosion resistance of the coating after laser quenching at 3000 W is not further improved compared to that after laser quenching at 1000 W.

Key words: laser cladding, laser quenching, microstructure, microhardness, salt spray corrosion resistance

中图分类号:

TG178

邓德伟, 万泓明, 汪红所, 陈文博, 连世伟. 激光熔覆Stellite6+WC复合涂层对不锈钢叶片耐水蚀性能的影响[J]. 金属热处理, 2024, 49(5): 243-251.

Deng Dewei, Wan Hongming, Wang Hongsuo, Chen Wenbo, Lian Shiwei. Effect of laser clad Stellite6+WC composite coating on water erosion resistance of stainless steel blades[J]. Heat Treatment of Metals, 2024, 49(5): 243-251.

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激光熔覆Stellite6+WC复合涂层对不锈钢叶片耐水蚀性能的影响

Effect of laser clad Stellite6+WC composite coating on water erosion resistance of stainless steel blades

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