文献类型：期刊文献

英文题名：Creep-fatigue life prediction and interaction diagram in nickel-based GH4169 superalloy at 650 °C based on cycle-by-cycle concept

作者：Wang, Run-Zi[1];Zhang, Xian-Cheng[1];Gong, Jian-Guo[1];Zhu, Xu-Min[1];Tu, Shan-Tung[1];Zhang, Cheng-Cheng[2]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, Minist Educ, Meilong Rd 130, Shanghai 200237, Peoples R China;[2]AECC Commercial Aircraft Engine Co LTD, Shanghai Engn Res Ctr Commercial Aircraft Engine, Shanghai 201108, Peoples R China

年份：2017

卷号：97

起止页码：114

外文期刊名：INTERNATIONAL JOURNAL OF FATIGUE

收录：;EI(收录号：20170103211532);WOS:【SCI-EXPANDED(收录号:WOS:000393631300012)】；

基金：The authors would like to acknowledge gratefully for the financial support through National Natural Science Foundation of China (51371082, 51322510). The author X.C. Zhang is also grateful for the support by Shanghai Pujiang Program, Young Scholar of the Yangtze River Scholars Program, and Shanghai Technology Innovation Program of SHEITC (CXY-2015-001).

语种：英文

外文关键词：Creep-fatigue; Strain energy density; Cycle-by-cycle; Life prediction; Interaction diagram

摘要：The purposes of the present work are to extend the previous energy-based model on the basis of strain energy density exhaustion and to estimate creep-fatigue endurance and accumulated damage using cycle-by-cycle concept in tension-hold-only tests. The nickel-based GH4169 superalloy at 650 degrees C is employed to fit material constants and to verify the prediction capacity of the present model under various loading conditions. The present model exhibits a higher accuracy than some existing models, especially for certain loading waveforms, where the half-life cycle cannot be considered as a representative one. In addition, the trajectory for time-dependent accumulated damage during the operating period can be monitored in the creep-fatigue interaction diagram. (C) 2016 Published by Elsevier Ltd.