激光熔覆WC/Fe梯度涂层对40Cr合金钢抗磨损性能的影响
Effects of Laser Cladding Fe-WC Gradient Composite Coating on Wear Resistance of 40Cr Alloy Steel
隋琦 1张硕 1马翊珈 1孙泽轩 1陈佩强1
作者信息
- 1. 长春工业大学 材料科学与工程学院,吉林 长春 130012
- 折叠
摘要
利用ND-YAG激光器对 40Cr钢进行表面熔覆WC增强铁基复合涂层,并且对比了单层激光熔覆、多层激光熔覆及梯度激光熔覆工艺制备的复合涂层的耐磨损性能.对比复合涂层分别为单层 50%WC/Fe 熔覆涂层、3 层50%WC/Fe熔覆涂层、10%WC/Fe+30%WC/Fe+50%WC/Fe梯度涂层.对涂层的微观组织结构、显微硬度和耐磨性能进行了分析.讨论了不同晶粒的形成和生长机制,阐述了WC颗粒对涂层耐磨性能的影响机制.结果发现,与单层铁基WC熔覆涂层相比,多层铁基WC熔覆涂层展现出优异的抗磨损性能,其中,梯度涂层具有更高的硬度、耐磨性和较高的摩擦系数.
Abstract
WC-reinforced Fe matrix composite coatings on 40Cr steel were prepared by ND-YAG laser device.The wear resistance of the single-layer,the multi-layer and the gradient coatings was also tested respectively.Composite coatings for comparison are:single layer 50%WC/Fe cladding coating,three layers 50%WC/Fe cladding coating,10%WC/Fe+30%WC/Fe+50%WC/Fe gradient coating.The microstructure,micro-hardness and wear resistance of the coating materials were also analyzed.The formation and growth mechanism of different grains were discussed,and the influence mechanism of WC particles on the wear resistance of the coating was expounded.The results show that,compared with the single-layer Fe matrix WC cladding coating,the multilayer Fe matrix WC cladding coating shows excellent wear resistance.The gradient coating has higher hardness,wear resistance and higher friction coefficient.
关键词
激光熔覆/铁基涂层/WC颗粒/磨损性能/显微硬度Key words
laser cladding/Fe based coating/WC particles/wear resistance/micro-hardness引用本文复制引用
基金项目
"十三五"科学技术项目(JJKH20200662KJ)
吉林省自然科学基金项目(20210101389JC)
出版年
2024
NETL
NSTL
万方数据