文献类型：期刊文献

英文题名：Effect of Preheating Temperature on Geometry and Mechanical Properties of Laser Cladding-Based Stellite 6/WC Coating

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 Mech Engn & Automat, Foshan 528000, Peoples R China

年份：2022

卷号：15

期号：11

外文期刊名：MATERIALS

收录：SCI-EXPANDED(收录号：WOS:000809055400001)、、EI(收录号：20222412232346)、Scopus(收录号：2-s2.0-85131842373)、WOS

基金：The National Natural Science Foundation of China (62073089); the Special projects in key fields of Guangdong colleges and Universities (2020ZDZX2061); the Postgraduate Education Innovation Project of Guangdong Ocean University (040502112103).

语种：英文

外文关键词：laser cladding; composite coating; microstructure; hardness; wear property

外文摘要：The effect of 60Si2Mn substrate preheating on the forming quality and mechanical properties of cobalt-based tungsten carbide composite coating was investigated. Substrate preheating was divided into four classes (room temperature, 150 degrees C, 250 degrees C, and 350 degrees C). The morphology, microstructure, and distribution of elements of the coating were analyzed using a two-color laser handheld 3D scanner, a scanning electron microscope (SEM), and an energy dispersive X-ray spectrometer (EDX), respectively. The hardness and wear properties of the cladding layer were characterized through a microhardness tester and a friction wear experiment. The research results show that the substrate preheating temperature is directly proportional to the height of the composite coating. The solidification characteristics of the Stellite 6/WC cladding layer structure are not obviously changed at substrate preheating temperatures of room temperature, 150 degrees C, and 250 degrees C. The solidified structure is even more complex at a substrate preheating temperature of 350 degrees C. At this moment, the microstructure of the cladding layer is mainly various blocky, petaloid, and flower-like precipitates. The hardness and wear properties of the cladding layer are optimal at a substrate preheating temperature of 350 degrees C in terms of mechanical properties.