电焊机2017，Vol.47Issue(10)：99-103,5.DOI:10.7512/j.issn.1001-2303.2017.10.21
激光熔敷制备高速钢涂层
High speed steel coating produced by laser cladding
摘要
Abstract
In order to take advantage of the excellent performance of high speed steel and expand its application area and reduce its cost,high hardness high speed steel wear resistant coating was produced on the side surface of stainless steel with a thickness of 3 mm by the coaxial powder feeding laser cladding technology and then some heat treatment of the samples were carried out.The microstructure of the coatings was analyzed,and the effect of heat treatment on the micro-hardness of the coating was studied.The wear resistance of the coating was tested.The results showed that the microstructure of the coating before heat treatment is small equiaxed grain,and the microstructure of the coating consists of quenched martensite,retained austenite and a small amount of carbides and tempered martensite,a small amount of retained austenite and a large number of precipitated carbides after heat treatment.The best heat treatment parameters were obtained,and the hardness of the coating was greatly improved after heat treatment,which was about 2 times than that of the substrate.The wear loss of the coating was only 1/5 compared to substrate.关键词
高速钢/激光熔敷/涂层/显微组织Key words
high speed steel/laser cladding/coating/microstructure分类
信息技术与安全科学引用本文复制引用
尹燕,路超,刘鹏宇,肖梦智,蔡伟军,张瑞华,屈岳波..激光熔敷制备高速钢涂层[J].电焊机,2017,47(10):99-103,5.基金项目
广东省2015年省前沿与关键技术创新专项资金(重大科技专项)项目资助(2015B010123002) （重大科技专项）
阳江市2015年度新型研发机构建设、工程技术研究开发中心建设、企业实验室专项资金项目资助(2015019) （2015019）
阳江2016年科技发展专项资金(协同创新与平台环境建设方向)资助(2060502) （协同创新与平台环境建设方向）
兰州理工大学学生科技创新基金资助项目(S20)、“广东省”扬帆计划引进创新创业团队专项资助(2015YT02G090) （S20）
