机械科学与技术2026，Vol.45Issue(1)：85-93,9.DOI:10.13433/j.cnki.1003-8728.20240021
考虑铣削亚表层残余应力的GH4169疲劳寿命预测与分析
Fatigue Life Prediction and Analysis of GH4169 Considering Subsurface Residual Stress in Milling
摘要
Abstract
Superalloy GH4169 is a typical difficult-to-machine material,and the surface integrity of milled parts directly affects its fatigue properties.In this paper,considering the residual stress distribution on the subsurface in the milling,the influence terms of the fatigue life prediction model were modified based on the parameters of work hardening and surface morphology,and the influence proportions of the surface integrity index on the fatigue life were analyzed.The experimental results show that the fatigue life of GH4169 can be accurately predicted by using the prediction model which considers the influence term of surface integrity.In the range of milling parameters,comparing with the surface topography,subsurface residual stress and surface work hardening have greater influence on the fatigue life and restrict each other.The mean value of residual stress between the milled surface and the depth of the maximum residual compressive stress and the work hardening characterized by the surface residual stress can reflect the variation trend of fatigue life.关键词
高温合金GH4169/残余应力/铣削/表面完整性/疲劳寿命Key words
superalloy GH4169/residual stress/milling/surface integrity/fatigue life分类
矿业与冶金引用本文复制引用
王峻晖,张杭,崔飞杰,闫蓉,彭芳瑜,闫澳迪..考虑铣削亚表层残余应力的GH4169疲劳寿命预测与分析[J].机械科学与技术,2026,45(1):85-93,9.基金项目
国家自然科学基金项目(92160301)与青年科学基金项目(C类)(52105447) （92160301）
