摘要
在304不锈钢表面预置不同质量分数的Fe60和WC复合粉末,采用光纤激光加工系统制备金属-陶瓷复合熔覆层。分别从宏观形貌、微观组织、物相分析、硬度分布等角度研究涂层的组织结构及性能。结果表明:复合熔覆层冶金结合良好,过渡区、热影响区生成CrC及WCx等硬质相,提高了熔覆层的硬度,对复合涂层力学性能有显著影响;当WC的质量分数比例为3%时,熔覆涂层的平均硬度为995 HV,约为304不锈钢基体的5倍,且高于其他质量分数比例的复合熔覆层。
Fe60 and WC composite powders with different mass fractions were preset on the surface of 304 stainless steel,and the metal ceramic composite cladding layer was prepared by optical fiber laser processing system.The microstructure and properties of the coating were studied from the perspectives of macro morphology,microstructure,phase analysis,and hardness distribution.The results show that the metallurgical bonding of the composite cladding layer is good,and hard phases such as CrC and WC_x are formed in the transition zone and heat affected zone,which improves the hardness of the cladding layer and significantly affects the mechanical properties of the composite coating.When the mass fraction of WC is 3%,the average hardness of the cladding coating is 995 HV,which is about 5 times that of 304 stainless steel substrate,and higher than that of the composite cladding coating with other mass fractions.
作者
黄江
朱志凯
李凯玥
师文庆
吴香林
谢玉萍
Huang Jiang;Zhu Zhikai;Li Kaiyue;Shi Wenqing;Wu Xianglin;Xie Yuping(School of Electronics and Information Engineering,Guangdong Ocean University,Zhanjiang 524088,Guangdong,China;Research Center of Guangdong Smart Oceans Sensor Networks and Equipment Engineering,Zhanjiang 524088,Guangdong,China;College of Mechanical and Power Engineering,Guangdong Ocean University,Zhanjiang 524088,Guangdong,China)
出处
《应用激光》
CSCD
北大核心
2023年第6期29-35,共7页
Applied Laser
基金
国家自然科学基金项目(62073089)
广东省教育厅特色创新项目(Q19012)
广东省普通高校重点领域专项项目(2020ZDZX2061)。
关键词
304不锈钢
激光熔覆
表面改性
复合涂层
304 stainless steel
laser cladding
surfacemodification
mixed coating
