后热处理对激光熔覆涂层应用的研究进展  

Research progress of application of post heat-treatment on laser cladded coatings

作　　者：于希辰 王志文 刘海青[1,2] 成明 Yu Xichen;Wang Zhiwen;Liu Haiqing;Cheng Ming(Applied Technology College, Soochow University, Suzhou Jiangsu 215325,China;School of Aerospace Engineering and Applied Mechanics,Tongji University,Shanghai 200092,China;School of Urban Rail Transportation,Soochow University,Suzhou Jiangsu 215000,China)

机构地区：[1]苏州大学应用技术学院,江苏苏州215325 [2]同济大学航空航天与力学学院,上海200092 [3]苏州大学城市轨道交通学院,江苏苏州215000

出　　处：《金属热处理》2019年第3期114-119,共6页Heat Treatment of Metals

基　　金：江苏省自然科学基金-青年基金(BK20150344);中国博士后科学基金(2016M601885);江苏省大学生创新创业训练计划项目(201813984013X)

摘　　要：高温热处理是一种缓解激光熔覆涂层残余应力和检测涂层高温稳定性的有效手段。本文从热处理的加热温度、保温时间和冷却速度角度出发,综述了热处理工艺对激光熔覆涂层的研究进展。分析了热处理对激光熔覆涂层物相和组织结构、力学性能以及摩擦学性能的影响机理,讨论了热处理过程中熔覆涂层的相组织演变以及涂层力学性能、摩擦学性能的变化规律。High temperature heart-treatment is an effective mean used to alleviate the residual stress and detect the high-temperature stability of laser cladding coating. In this paper,the influence of heart-treatment process on laser cladding coating is summarized from hearting temperature,holding time and cooling speed. The effect of heart-treatment on phases,microstructure,mechanical properties and tribological properties of laser cladding coating is analysed. The phase and microstructure evolution rule,the causes of the changes of mechanical properties and tribological properties of laser cladding coating during the heart-treatment process are also briefly discussed,which provides a reference for relevant experiments and application.

关 键 词：激光熔覆涂层 热处理 相组织演变 硬度 摩擦学性能 

分 类 号：TG174.44[金属学及工艺—金属表面处理]