镍基单晶高温合金表面喷丸强化技术研究综述  

Research review of surface shot peening strengthening technology ofNi-based single-crystal superalloy

作　　者：耿永祥 郑海忠[1] 李贵发[1] 肖怡新 GENG Yong-xiang;ZHENG Hai-zhong;LI Gui-fa;XIAO Yi-xin(School of Material Science and Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]南昌航空大学材料科学与工程学院,江西南昌330063

出　　处：《塑性工程学报》2023年第10期1-11,共11页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(52271057,52071172,51361026);江西省青年科学基金资助项目(20212BAB214037);南昌航空大学博士启动金项目(2010009401102)。

摘　　要：镍基单晶涡轮叶片作为先进航空发动机的关键热端部件,在服役过程中面临疲劳失效的风险。喷丸强化技术能够有效改善镍基单晶涡轮叶片的疲劳强度与服役寿命,已成为解决其疲劳失效问题的有效手段之一。重点针对传统颗粒喷丸和现代激光喷丸两类典型的喷丸强化技术,介绍了其基本原理与工艺特点;分析了镍基单晶高温合金的各向异性特征;综述了镍基单晶高温合金两类喷丸强化技术的国内外研究现状;总结了两类喷丸强化技术在镍基单晶高温合金上的应用瓶颈,进而展望了镍基单晶高温合金喷丸强化技术未来的发展趋势和研究方向,为拓宽喷丸强化技术的应用领域以及促进该技术在单晶高温合金部件上的工程化应用提供参考。As the key hot-end components of advanced aeroengine,Ni-based single-crystal turbine blades face the risk of fatigue failure during service process.Shot peening strengthening technology can significantly improve the fatigue strength and service life of the Ni-based single-crystal turbine blades and becomes an effective mean to solve its problem of fatigue failure.Focusing on two kinds of shot peening strengthening technologies of traditional particle shot peening and modern laser shock peening,the basic principles and process characteristics of them were introduced,and the anisotropic characteristics of Ni-based single-crystal superalloy were analyzed.The research status both at home and abroad of the two kinds of shot peening strengthening technologies of Ni-based single-crystal superalloy was reviewed.The bottleneck in the application of the two kinds of shot peening strengthening technologies on Ni-based single-crystal superalloy was summarized.The future development trend and research direction of shot peening strengthening technology of Ni-based single-crystal superalloy were prospected,which provides reference for broadening the application field of shot peening strengthening technology and promoting the engineering application of this technology on single-crystal superalloy components.

关 键 词：镍基单晶高温合金 颗粒喷丸 激光喷丸 再结晶微观组织 残余应力热释放 

分 类 号：TG668[金属学及工艺—金属切削加工及机床]