引用本文:钱丽艳,王艳虎,戴峰泽,KONOVALOV Sergey,闻明,陈希章.激光冲击强化对钛合金疲劳寿命影响综述*[J].中国表面工程,2022,34(2):103~112
QIAN Liyan,WANG Yanhu,DAI Fengze,KONOVALOV Sergey,WEN Ming,CHEN Xizhang.Laser Shock Processing and Its Effect on Fatigue Life of Titanium Alloys : A Review[J].China Surface Engineering,2022,34(2):103~112
【打印本页】   【HTML】   【下载PDF全文】   【查看/发表评论】  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被：浏览 1121次   下载 685次 本文二维码信息
码上扫一扫！
分享到： 微信 更多
字体:加大+|默认|缩小-
激光冲击强化对钛合金疲劳寿命影响综述*
钱丽艳1, 王艳虎2, 戴峰泽3, KONOVALOV Sergey3, 闻明4, 陈希章1
1.温州大学机电工程学院 温州 325035;2.萨马拉国立研究型大学金属技术与航空材料系 萨马拉 443086 俄罗斯;3.江苏大学机电工程学院 镇江 212013;4.昆明贵金属研究所稀贵金属综合利用新技术国家重点实验室 昆明 650106
摘要:
对提升钛合金零件的疲劳强度，已有相关技术的试验研究，但缺乏对技术的系统介绍，阻碍了该技术的产业化应用。 通过整理大量试验数据及其结果，就激光冲击强化对钛合金零件的疲劳特性的影响展开分析。简要介绍激光冲击强化技术的发展状况，分别从表面形貌、残余应力、微观组织、硬度、表面粗糙度等方面进行分析总结。结果发现，当激光脉冲能量为 7 J 时，材料塑性变形量最大；当激光功率密度为 3 GW / cm2 时，材料表面残余压应力值最高；当冲击次数达到 5 次以上时， 材料表层的位错密度不断增大；当在工件表面覆盖一层高强度的光滑金属接触膜时，材料表面粗糙度将降低。综合数据可知激光功率密度及冲击次数对钛合金疲劳寿命的影响最大。整理了大量试验数据，可为得到最佳的激光冲击强化效果及提升疲劳寿命提供理论参考。
关键词:  激光冲击  钛合金  疲劳强度  表面形貌  残余应力  力学性能
DOI：10.11933/j.issn.1007-9289.20210825003
分类号:TG156;TB114
基金项目:浙江省重点研发计划资助项目(2021C04022)
Laser Shock Processing and Its Effect on Fatigue Life of Titanium Alloys : A Review
QIAN Liyan1, WANG Yanhu2, DAI Fengze3, KONOVALOV Sergey3, WEN Ming4, CHEN Xizhang1
1.School of Electromechanical Engineering, Wenzhou University, Wenzhou 325035 , China;2.Department of Metals Technology and Aviation Materials, Samara National Research University,Samara 443086 , Russia;3.School of Electromechanical Engineering, Jiangsu University, Zhenjiang 212013 , China;4.State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals, Kunming 650106 , China
Abstract:
In order to promote the fatigue strength of titanium alloy parts, scholars have carried out experimental research on the related technology, but the lack of systematic introduction of this technology hinders the industrial application of it. A lot of experimental data and results are collected, and the effect of laser shock peening on fatigue properties of titanium alloy parts is analyzed. The development of laser shock strengthening technology is introduced, and the surface morphology, residual stress, microstructure, hardness and surface roughness are analyzed and summarized respectively. The results show that when the laser pulse energy is 7 J, the plastic deformation of the material reaches the maximum. When the laser power density is 3 GW / cm2 , the residual compressive stress is the highest. When the impact number reaches more than 5 times, the dislocation density of the material surface increases continuously. When the workpiece surface is covered with a high strength smooth metal contact film, the surface roughness of the material will be reduced. Comprehensive data show that laser power density and impact times have the greatest influence on fatigue life of titanium alloy. A large number of experimental data are sorted out, which provides an important theoretical reference for obtaining the best laser shock strengthening effect and improving fatigue life.
Key words:  laser shock  titanium alloy  fatigue strength  surface morphology  residual stress  mechanical property
手机扫一扫看