中国机械工程2025，Vol.36Issue(4)：780-789,10.DOI:10.3969/j.issn.1004-132X.2025.04.015
热机载荷下GH4169G车削-喷丸加工表面完整性的演化机理
Evolution Mechanism of Surface Integrity of GH4169G Turning-shot Peening under Thermal and Mechanical Loads
摘要
Abstract
A study of the evolution mechanism of surface integrity of turning-shot peening com-posite machining under service load conditions was carried out for the nickel-based superalloys GH4169G for aero-engines.The forms of thermal,mechanical,and thermo-mechanical loads on sur-face integrity were analyzed by simulating thermo-mechanical load tests under service environments.The thermo-mechanical loading model for surface integrity control and the residual stress and micro-hardness evolution model with cosine function control factor were established.The laws of residual stress relaxation under thermo-mechanical loading and the laws of microhardness changes and surface microstructure changes were mastered.The results provide basic data for mastering the evolution of surface integrity of nickel-based superalloys processed under service environments.The surface integ-rity control processes were further optimized.关键词
高温合金GH4169G/车削-喷丸复合加工/服役环境/表面完整性演化Key words
superalloy GH4169G/combined turning and shot peening/service environment/evo-lution of surface integrity分类
航空航天引用本文复制引用
何喆,李佳乐,史恺宁,樊昱昌,黄新春..热机载荷下GH4169G车削-喷丸加工表面完整性的演化机理[J].中国机械工程,2025,36(4):780-789,10.基金项目
中央高校基础研究基金(HYGJZN202319) （HYGJZN202319）
