激光熔注制备的W颗粒增强铝合金的微观结构与磨损

Microstructure and Wear of W-Particle-Reinforced Al Alloys Prepared by Laser Melt Injection.

作者信息

Xu Zhidong, Wang Dengzhi, Song Wenji, Tang Congwen, Sun Pengfei, Yang Jiaxing, Hu Qianwu, Zeng Xiaoyan

机构信息

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China.

出版信息

Micromachines (Basel). 2022 Apr 29;13(5):699. doi: 10.3390/mi13050699.

DOI:10.3390/mi13050699

PMID:35630166

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9143430/

Abstract

W-particle-reinforced Al alloys were prepared on a 7075 aluminum alloy surface via laser melt injection to improve their wear resistance, and the microstructure, microhardness, and wear resistance of the W/Al layers were studied. Scanning electron microscopy (SEM) results confirmed that a W/Al laser melting layer of about 1.5 mm thickness contained W particles, and AlW was formed on the surface of the Al alloys. Due to the reinforcement of the W particles and good bonding of the W and Al matrix, the melting layer showed excellent wear resistance compared to that of Al alloys.

摘要

通过激光熔覆在7075铝合金表面制备了W颗粒增强铝合金，以提高其耐磨性，并研究了W/Al层的微观结构、显微硬度和耐磨性。扫描电子显微镜（SEM）结果证实，厚度约为1.5mm的W/Al激光熔覆层中含有W颗粒，且在铝合金表面形成了AlW。由于W颗粒的增强作用以及W与Al基体的良好结合，熔覆层与铝合金相比表现出优异的耐磨性。