文献类型：期刊文献

英文题名：Effect of W Content on Microstructure and Properties of Laser Cladding CoCrFeNi HEA Coating

作者：Luo, Fangyan[1];Yang, Tuchuan[1];Zhao, Yang[1];Xiong, Zhengye[1];Huang, Jiang[1]

机构：[1]Guangdong Ocean Univ, Sch Elect & Informat Engn, Zhanjiang 524088, Peoples R China

年份：2023

卷号：13

期号：8

外文期刊名：COATINGS

收录：SCI-EXPANDED(收录号：WOS:001147610800001)、、Scopus(收录号：2-s2.0-85168945517)、WOS

基金：Supported by the national natural science foundation projects (No. 62073089), and Laser processing team project of Guangdong Ocean University (No, CCTD201823).

语种：英文

外文关键词：laser cladding; microstructure; HEA; microhardness; corrosion resistance

外文摘要：The 316L SS surfaces were prepared with CoCrFeNi HEA/W-composite coatings using the laser cladding technique with various mass fractions of W. The mass fractions of W were 10, 20, 30, and 40%. The microstructure of the HEA/W-composite coatings was investigated using a variety of characterization methods. According to the results, the samples were in the BBC phase. In the SEM images, a solid-liquid bonding layer was observed, which indicates the samples had good metallurgical bonding. The W particles prevented the orderly growth of the HEA grains, and a significant refinement of the grains around the W particles occurred. The lattice constants measured by XRD mapping indicate that adding W particles to CoCrFeNi HEA leads to lattice distortion. The hardness of the HEA/W coatings was substantially higher than the substrate and the pure CoCrFeNi coating by hardness measurements and was greatest at a W content of 40%. The hardness of the HEA/W coatings was significantly increased compared to the substrate and the pure CoCrFeNi coating by hardness measurements and was greatest at a W content of 40%. The HEA/W coating was tested for electrochemical corrosion, and a 10% mass fraction of W achieved the highest level of corrosion resistance.