文献类型：期刊文献

英文题名：Creep-fatigue interaction and damage behavior in 9-12%Cr steel under stress-controlled cycling at elevated temperature: Effects of holding time and loading rate

作者：Liu, Zhi[1];Gong, Jian-Guo[1];Zhao, Peng[1];Zhang, Xiao-Cheng[1];Xuan, Fu-Zhen[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety MOE, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2022

卷号：156

外文期刊名：INTERNATIONAL JOURNAL OF FATIGUE

收录：;EI(收录号：20215111355706);WOS:【SCI-EXPANDED(收录号:WOS:000788140100004)】；

基金：Acknowledgement Supports from National Natural Science Foundation of China (Grant Nos.: 51605165 and 51835503) are greatly acknowledged.

语种：英文

外文关键词：Creep-fatigue interaction; Stress-controlled mode; Holding time; Loading rate; Creep-fatigue damage diagram

摘要：Considering that most creep-fatigue tests were conducted under strain-controlled mode in previous works, creep fatigue behavior of 9-12%Cr steel under stress-controlled cycling at elevated temperature was investigated in this work. Particular attention was paid to the effects of holding time and loading rate on the deformation and damage behavior. Results indicated that a remarkable creep ratcheting is generally observed in the creep-fatigue tests with the stress ratio of-1. Ratcheting strain and creep damage progress faster as the holding time becomes larger or the loading rate becomes smaller, resulting in the decrease of the number of cycles to creep-fatigue failure.