高能激光引入对冷喷涂Al6061涂层沉积行为及微观组织的影响  

Effect of High Energy Lasers Introduction on Deposition and Microstructure of Cold Spray Al6061 Coating

作　　者：卢权光 褚欣 杜晓伟 刘敏 邓春明 龙雨 谢迎春 LU Quanguang;CHU Xin;DU Xiaowei;LIU Min;DENG Chunming;LONG Yu;XIE Yingchun(Institute of Laser Intelligent Manufacturing and Precision Processing,School of Mechanical Engineering,Guangxi University,Nanning 530004,China;Institute of New Materials,Guangdong Academy of Sciences,National Engineering Laboratory of Modern Materials Surface Engineering Technology,Guangdong Provincial Key Laboratory of Modern Surface Engineering Technology,Guangzhou 510650,China;Air Force Engineering University Aviation Maintenance Officer School Aviation Repair Engineering Department,Xinyang 464099,China)

机构地区：[1]广西大学机械工程学院,激光智能制造与精密加工研究所,南宁530004 [2]广东省科学院新材料研究所,广东省现代表面工程技术重点实验室,粤港现代表面工程技术联合实验室,广州510650 [3]空军工程大学航空机务士官学校航空修理工程系,河南信阳464099

出　　处：《有色金属工程》2024年第12期167-176,共10页Nonferrous Metals Engineering

基　　金：广东省现代表面工程技术重点实验室暨粤港现代表面工程技术联合实验室开放课题资助项目(2024KFKT04);国家重点研发计划项目(2023YFE0108000);广东省特支计划项目(2019BT02C629);广东省科学院打造综合产业技术创新中心专项(2022GDASZH-2022010107);广东省科学院发展专项资金项目资助(2022GDASZH-2022010203-003);广东省科技计划项目资助(2023B1212060045,2023B1212120008)。

摘　　要：冷喷涂Al6061涂层技术已成功应用于航空零部件修复。但高致密高性能冷喷涂Al6061涂层制备,往往需要采用价格昂贵的氦气,低成本制备冷喷涂Al6061涂层技术亟需突破。高能激光能够快速加热软化材料,可有效促进冷喷涂颗粒的高速碰撞变形沉积致密化过程。为此,在冷喷涂过程中引入高能激光,研究了激光功率对冷喷涂Al6061涂层沉积行为及微观组织的影响,评估了激光功率在0~7 kW内制备的Al6061涂层的沉积厚度、微观结构、显微硬度和物相。可为低成本高致密Al6061涂层的制备提供理论指导。The cold spray Al6061 coating technology has been successfully applied to the repair of aviation components.However,achieving high-density and high-performance coatings still necessitates the use of costly helium gas.Addressing the challenge of cost-effective preparation of cold spray Al6061 coatings is urgent.High-energy lasers can rapidly heate and soften materials,effectively promoting the high-speed impact deformation,deposition and densification of cold spray powder particles.To this end,this paper investigated the effect of laser power on the deposition and microstructure of cold sprayed Al6061 coatings by introducing high-energy lasers.The deposition thickness,microstructure,microhardness,and phase composition of Al6061 coatings produced by laser power in the range of 0—7 kW were evaluated.This study provided theoretical guidance for the preparation of cost-effective and high-density Al6061 coatings.

关 键 词：冷喷涂 激光 Al6061 沉积机理 微观结构 

分 类 号：TG174.4[金属学及工艺—金属表面处理]