加工表面完整性对GH4169高温合金疲劳断口形貌的影响  

Influence of Surface Integrity on Fatigue Fracture Morphology of GH4169

作　　者：杨茂奎[1] 李雅卿[1] 吴晓玲 任敬心[1] 

机构地区：[1]西北工业大学

出　　处：《航空制造工程》1997年第1期22-24,共3页Aviation Engineering & Maintenance

基　　金：航空科学基金

摘　　要：通过扫描电镜观察ＧＨ４１６９高温合金常温与高温低周应力控制疲劳断口的宏观形貌与微观形貌，用断裂力学理论分析了ＧＨ４１６９高温合金疲劳断口的宏观形貌和微观形貌的特征。The macroscopic feature and the microcosmic feature of low cycle fatigue fracture sections of superalloy GH4169 at room temperature and at 650℃ have been studied. Three main aspects of nickel based superalloy GH4169 have been analyzed with fracture theories, including the process of fatigue fracture, the macroscopic feature and the microcosmic feature of fatigue fracture section and influence of surface integrity on the macroscopic feature and the microcosmic feature of fatigue fracture.

关 键 词：高温合金 表面完整性 寿命 磨削 

分 类 号：TG132.32[一般工业技术—材料科学与工程]