激光冲击强化对FGH95粉末合金的表面完整性研究  

Study on Surface Integrity of FGH95 Powder Alloy by Laser Shock Processing

作　　者：瞿祥明 朱海燕 赵艳云 张永康 QU Xiangming;ZHU Haiyan;ZHAO Yanyun;ZHANG Yongkang(School of Electromechanical Engineering,Guangdong University of Technology,Guangzhou 510006,China;Hu′nan Power Machinery Research Institute of AECC,Zhuzhou 412002,China)

机构地区：[1]广东工业大学机电工程学院,广东广州510006 [2]中国航发湖南动力机械研究所,湖南株洲412002

出　　处：《电加工与模具》2022年第6期41-45,共5页Electromachining & Mould

基　　金：国家自然科学基金项目(51775117);江苏省科技计划项目(BE2019081)。

摘　　要：选择用于涡轮盘榫槽结构的FGH95粉末合金为研究对象,研究入射角度、激光能量和冲击次数不同的激光冲击强化处理对FGH95材料的表面完整性影响。结果表明:表面粗糙度值、残余应力和显微硬度都会随着激光能量和冲击次数的增加而增加,增幅逐渐减小且冲击次数的增幅下降趋势更大;表面粗糙度值、残余应力和显微硬度都会随着入射角度的增加先增大而后减小,入射角度在20°呈现最大的表面粗糙度值和残余应力,在40°呈现最大的表面显微硬度。The FGH95 powder alloy used in the tenon groove structure of turbine disk was selected as the research object to study the effect of laser shock processing treatment with different incident angle,laser energy and impact times on the surface integrity of FGH95 material.The result showed that the surface roughness,residual stress and microhardness all increase with the increase of laser energy and impact times,while the increase trend decreases gradually and the increase of impact times decreases more.The surface roughness,residual stress and microhardness will first increase and then decrease with the increase of incident angle.The maximum surface roughness and residual stress will appear at an angle of 20°and the maximum surface microhardness will appear at 40°.

关 键 词：激光冲击强化 斜入射角度 FGH95粉末合金 表面完整性 涡轮盘榫槽 

分 类 号：TG665[金属学及工艺—金属切削加工及机床]