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中文摘要: 采用激光熔覆技术在高锰钢基体上制备了不同 WC 含量的 Fe-WC 复合熔覆层， 研究了 WC 添加量对熔覆
层组织和性能的影响。 试验结果表明， 不同 WC 含量的 Fe-WC 熔覆层均含有马氏体、 M7C3 碳化物和未熔 WC 颗
粒， 当加入 20wt.% 的 WC 时， 熔覆层中出现了残余奥氏体， 共晶碳化物呈鱼骨状沿晶界析出。 Fe-WC 熔覆层的
硬度和耐磨性随着 WC 添加量的增多而增大， 熔覆层中 WC 颗粒减小熔覆层基体与对磨副的接触面积， 合金基
体固定和支撑 WC 颗粒避免其剥落， 二者协同作用使得熔覆层耐磨性增加。
Abstract:Fe-WC composite coatings with different WC contents were prepared on high manganese steel
substrate by laser cladding. The effect of WC content on the microstructure and properties of the cladding layer
was studied. The results show that the Fe-WC coatings with different WC content contains martensite, M7C3
carbide and unmelted WC particles. When 20wt.% WC was added, retained austenite appears in the cladding layer
and eutectic carbide precipitates along the grain boundary in fishbone shape. The hardness and wear resistance of
the Fe-WC cladding layer increased with the increase of WC content. The WC particles in the cladding layer were
the skeleton and the alloy matrix was the support. The synergistic effect of the two make the wear resistance of the
cladding layer increase.
keywords: Laser cladding High manganese steel Fe-based alloy Microstructure Wear resistance performance
文章编号： 中图分类号：TG174.4 文献标志码：
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引用文本：
皮自强,杜开平,郑兆然,陈星.高锰钢表面激光熔覆 Fe-WC 复合涂层的组织与性能[J].热喷涂技术,2021,13(2):77-84.
皮自强,杜开平,郑兆然,陈星.高锰钢表面激光熔覆 Fe-WC 复合涂层的组织与性能[J].热喷涂技术,2021,13(2):77-84.