高温合金锻件残余应力量化表征及控制技术研究进展

毕中南, 秦海龙, 刘沛, 史松宜, 谢锦丽, 张继

Research Progress Regarding Quantitative Characterization and Control Technology of Residual Stress in Superalloy Forgings

BI Zhongnan, QIN Hailong, LIU Pei, SHI Songyi, XIE Jinli, ZHANG Ji

图11 不同残余应力的GH4169合金盘件低循环疲劳实验结果[91]

Fig.11 Low cycle fatigue test results of GH4169 alloy discs with different residual stresses[91] (a) schematic of low cycle fatigue test method (EDM—electrical discharge machining, ω—angular speed)(b) crack length with fatigue cycles (c) workpieces after low cycle fatigue fracture