摘要
利用TIG技术在304不锈钢基体上制备WC-8Co-4Cr熔覆层,研究焊接电流对熔覆层显微组织和硬度的影响。结果表明:在70 A电流下,TIG沉积的熔覆层组织均匀、致密;物相主要由WC、W2C和W等组成;熔覆层硬度较好,约为900 HV0.3,主要归因于熔化的WC颗粒增强了CrCo基体。
The WC-8 Cr-4 Co cladding coating on 304 stainless steel substrate was prepared by TIG welding process.The effect of welding current on microstructure and micro hardness of the cladding coating was studied.The result shows that the microstructure of cladding coating deposited by TIG at 70 A is uniform and compact.The phases are mainly composed of WC,W2C and W.The microhardness of the cladding coating is better,about 900 HV0.3,which is attributed to the partially melted WC grains reinforced in CoCr matrix.
作者
卢威
万珍珍
蒋智梅
陈娜
金莹
LU Wei;WAN Zhen-zhen;JIANG Zhi-mei;CHEN Na;JIN Ying(Department of Aviation maintenance Engineering,Zhangjiajie Institute of Aeronautical Engineering,Zhangjiajie Hunan 427000,China;Institute of Applied Physics,Jiangxi Academy of Sciences,Nanchang Jiangxi 330090,China)
出处
《热处理技术与装备》
2020年第6期14-17,共4页
Heat Treatment Technology and Equipment
基金
湖南省教育厅科学研究资助项目(18C1775)
张家界航空工业职业技术学院院级课题(ZHK2015-042)。
