Life modeling of anisotropic fatigue behavior for a single crystal nickel-base superalloy

被引:28
作者
Dong, Chengli [1 ,2 ]
Yu, Huichen [1 ]
Li, Ying [1 ]
Yang, Xiaoguang [2 ]
Shi, Duoqi [2 ]
机构
[1] Beijing Inst Aeronaut Mat, Beijing Key Lab Aeronaut Mat Testing & Evaluat, Sci & Technol Adv High Temp Struct Mat Lab, Beijing 100095, Peoples R China
[2] Beihang Univ, Sch Energy & Power Engn, Beijing 100191, Peoples R China
基金
中国国家自然科学基金;
关键词
Life modeling; Single crystal; Low cycle fatigue; Anisotropic; Hill parameters; LOW-CYCLE FATIGUE; CRITICAL PLANE; FAILURE; ORIENTATIONS;
D O I
10.1016/j.ijfatigue.2013.11.026
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Strain-controlled low cycle fatigue (LCF) experiments of a second generation single crystal (SC) nickel-base superalloy are carried out to investigate the effect of crystallographic orientations on its LCF life. Further, the life modeling of the SC superalloy is considered by employing the modified Mucke's anisotropic model. The results show that the LCF life of the SC superalloy has a strong crystallographic orientation dependence; the local strain approach fails to predict the fatigue life but the modified Mucke's anisotropic model is able to predict the fatigue life for the SC superalloy at the three characteristic orientations simultaneously. (C) 2013 Elsevier Ltd. All rights reserved.
引用
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页码:21 / 27
页数:7
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