(1. 中國科學院金屬研究所 高溫合金研究部，北京 110016；
2. 廣東工業(yè)大學 機電工程學院，廣州 510006；
3. 中國科學院 沈陽自動化研究所 裝備制造技術研究室，沈陽 110179)
摘 要: 激光沖擊處理可促使材料產生較傳統(tǒng)表面強化工藝更優(yōu)的強化效果，并且誘發(fā)的顯微組織變化具有更高的熱穩(wěn)定性，有望對高溫合金材料的服役性能提升產生有利作用。分別從表面形貌、顯微組織、服役性能等方面介紹激光沖擊強化在不同高溫合金材料上的應用研究成果。通過激光沖擊誘導高溫合金微尺度表面形貌變化相關研究的分析，提出對激光沖擊誘導局部反向變形進行數值仿真驗證的研究方向。總結激光沖擊強化在改善高溫合金組織狀態(tài)以及提升疲勞等服役性能方面的研究成果，進而指明單晶高溫合金激光沖擊疲勞延壽研究的必要性。
關鍵字: 激光沖擊強化；高溫合金；表面形貌；組織；性能
（1. Superalloys Division, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;
2. School of Electra Mechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China;
3. Equipment Manufacturing Technology Laboratory, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110179, China）
Abstract:Laser shock processing (LSP) can produce better strengthening effect than the traditional surface strengthening processes, and the induced microstructure change has higher thermal stability, which is expected to have a beneficial effect on the service performance of superalloy materials. The applications of LSP on different superalloy materials were introduced from the aspects of surface topography, microstructure and service performance. The research direction of numerical simulation and verification of local reverse deformation induced by LSP was proposed through the analysis of the LSP-induced microscale surface topography of superalloy. The research results of LSP in improving the microstructure and fatigue performance of superalloy were summarized, and then the study necessity of LSP fatigue prolonging for single crystal superalloy was indicated.
Key words: laser shock processing; superalloy; surface topography; microstructure; property
