The Microstructure and Wear Resistance of Laser Cladding Ni60/60%WC Composite Coatings

被引：0
|
作者：
Liu, Junxiao [1 ,2 ]
Liu, Chen [1 ,2 ]
Zhang, Xiaoyu [1 ,2 ]
Yin, Xiuyuan [1 ,2 ]
Meng, Fanyu [1 ,2 ]
Liu, Changsheng [1 ,2 ]
机构：
[1] Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China
[2] Northeastern Univ, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China
来源：
METALS | 2025年 / 15卷 / 02期
关键词：
laser cladding; WC; microstructure; wear resistance; 45; STEEL; WC; BEHAVIOR;
D O I：
10.3390/met15020166
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, Ni60/60%WC composite coatings were fabricated on 45 steel by laser cladding. The optimum process was selected through high throughput optimization experiments which had a laser power of 2400 W, scanning speed of 8 mm/s, and powder feeding rate of 20 g/min. The single-layer multilayer coatings were prepared without any cracks and pores, and the thickness of the coatings was 1.52 mm. The coating and the substrate were found to have an effective metallurgical connection. WC was distributed relatively uniformly throughout the coating, which involved the gamma-(Fe, Ni), WC, W2C, Cr23C6, and Fe3.57W9.43C3.54 phases. The average microhardness of the coating was 1416.14 HV0.2, approximately 5.47 times that of the substrate, and the average coefficient of friction of the coating was 0.5144, which was 43.5% lower than that of the substrate. The wear rate was reduced by 79.13%.
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页数：14
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