文献类型：期刊文献

英文题名：Study on the effect of Ni60 transition coating on microstructure and mechanical properties of Fe/WC composite coating by laser cladding

作者：Wu, Teng[1];Shi, Wenqing[1];Xie, Linyi[1];Gong, Meimei[1];Huang, Jiang[1];Xie, Yuping[1];He, Kuanfang[2]

机构：[1]Guangdong Ocean Univ, Sch Elect & Informat Engn, Zhanjiang 524088, Peoples R China;[2]Foshan Univ, Sch Mechatron Engn & Automat, Foshan 528000, Peoples R China

年份：2023

卷号：163

外文期刊名：OPTICS AND LASER TECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:000965235100001)、、EI(收录号：20231313806588)、Scopus(收录号：2-s2.0-85150764252)、WOS

基金：Acknowledgements This work is supported financially by the National Natural Science Foundation of China (No.62073089) ; the Special Project for Key Fields of Higher Education in Guangdong Province (No.2020ZDZX2061) ; and the Postgraduate Education Innovation Project of Guangdong Ocean University (No.040502112103) .

语种：英文

外文关键词：Laser cladding; Fe; WC composite coating; Transition coating; Microhardness; Tribological properties

外文摘要：Two coatings, i.e. a single Fe/WC cladding layer and a combination of a Fe/WC cladding layer and a Ni60 transition coating, were prepared on the surface of 60Si2Mn spring steel using the laser cladding technology. The effect of the Ni60 transition coating on the macromorphology, microstructure, element distribution, Vickers microhardness and tribological properties of the Fe/WC cladding layer was investigated. The experimental re-sults show that the added Ni60 transition coating reduces the possibility of generating pores and cracks in the Fe/ WC composite coating and promotes the upward elongation growth trend of columnar crystals, but has no significant effect on the solidification characteristics of the cladding layer. The solidification characteristics of both coatings consist of dendrites and interdendritic eutectics. In addition, the microstructure in the top and middle regions of the single Fe/WC composite coating mainly shows the distribution of snowflake-like equiaxed crystals, and columnar crystals dominate the bottom region. In terms of mechanical properties, the diffusion of the Ni element reduces the microhardness of the cladding layer and increases the average friction coefficient and wear volume of the Fe/WC composite coating, but these mechanical properties are still significantly enhanced compared with those of the matrix.