文献类型：期刊文献

英文题名：Study of lead-bismuth eutectic on material performance degradation and life assessment for modified 9Cr-1Mo steel under low cycle fatigue at high temperatures

作者：He, De-Cheng[1];Tan, Jian-Ping[1];Nie, Wen-Rui[1];Liu, Li-Qiang[1];Wang, Run-Zi[1,3];Zhang, Xian-Cheng[1,3];Tu, Shan-Tung[1];Du, Juan[2];Zhang, Ying[2]

机构：[1]East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[2]Nucl Power Inst China, Sci & Technol Reactor Syst Design Technol Lab, Chengdu 610213, Peoples R China;[3]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, Minist Educ, Meilong Rd 130, Shanghai 200237, Peoples R China

年份：2023

卷号：176

外文期刊名：INTERNATIONAL JOURNAL OF FATIGUE

收录：;EI(收录号：20233314533398);WOS:【SCI-EXPANDED(收录号:WOS:001060889800001)】；

基金：This work was supported financially by the National Natural Science Foundation of China (Nos. 52005185, U21B2077, 52075174 and 52130511), Young Elite Scientists Sponsorship Program by CAST (YESS20200029), and the JSPS Postdoctoral Fellowships for Research in Japan (FY2020 P20350) and the Grant-in-Aid for JSPS Fellows (21F50350) by the Japan Society for the Promotion of Science (JSPS).

语种：英文

外文关键词：LBE environment; Low cycle fatigue; Life assessment; Oxidation; Degradation mechanism

摘要：Lead-bismuth eutectic (LBE) serves as one of the efficient coolants in Generation IV nuclear reactors. Considering LBE degradation, the aims of the present work are to propose a fatigue life prediction model at material-level and to obtain a component-level fatigue assessment. The LBE degradation factors of temperatures, strain ranges and strain rates are incorporated into the proposed life prediction model. Afterwards, fatigue life design curves are correspondingly put forward. Furthermore, recommended fatigue life assessment procedures are established for engineering applications. Finally, a continuous process in "deformation-cracking-repassivation" of oxide films is discussed to reveal oxidation-sensitive LBE degradation mechanism.