文献类型：期刊文献

英文题名：Research on Creep Behavior of Three-Point Bending Specimen With Fixed Constraints at the Large Deformation Stage

作者：Han, Xiao[1];Yu, Hai-Yang[1];Zhou, Guo-Yan[1];Zhuang, Fa-Kun[1];Tu, Shan-Tung[1]

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

年份：2022

卷号：144

期号：4

外文期刊名：JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME

收录：;EI(收录号：20215011323899);WOS:【SCI-EXPANDED(收录号:WOS:000825809900009)】；

基金：National Natural Science Foundation of China (No. 51675181; Funder ID: 10.13039/501100001809).

语种：英文

外文关键词：three-point bending specimen with fixed constraints; large deformation; general deformation theory; fracture behavior

摘要：Three-point bending specimen with fixed constraints is a novel small specimen test technique, which can simultaneously obtain creep deformation and creep fracture data. However, the current research only focused on the small deformation theoretical analysis, which is contrary to the actual experiment results. In this study, the general deformation theory was introduced to analyze creep deformation behavior of three-point bending specimen with fixed constraints at the large deformation stage. Based on this theory, the equivalent stress and strain were analyzed. Then, the feasibility and accuracy were verified by comparing with the experimental data of A7N01 aluminum alloy at 380 degrees C. The results show that the regressed creep parameters agree well with those from the uni-axial ones. It can be found that the equivalent stress obtained by the general deformation theory can be well used to life prediction analysis of A7N01 aluminum alloy.