文献类型：期刊文献

英文题名：Applicability of two types of notched tension specimens to determine the multiaxial stress rupture criterion for GH4169 at 650 °C

作者：Song, Yuan-Xu[1];Zhang, Kun[1,2];Tan, Jian-Ping[1,3];Wang, Tao[4];Zhang, Xuan[1];Su, Jie[1];Liu, Xuan[5];Yan, Jing-Bo[6];Liu, Peng[6];Wen, Jian-Feng[1];Wang, Ning[1];Zhang, Xian-Cheng[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[2]Zhejiang Univ Technol, Coll Mech Engn, Hangzhou 310023, Peoples R China;[3]Shanghai Inst Aircraft Mech & Control, Shanghai 200237, Peoples R China;[4]Qing Dao Topscomm Commun CO LTD, Qing Dao 266114, Peoples R China;[5]Shenyang Res Inst Chem Ind, Chem Ind Safety Technol & Engn Ctr, Shenyang 110021, Peoples R China;[6]Xian Thermal Power Res Inst Co Ltd, Xian 710032, Peoples R China

年份：2026

卷号：219

外文期刊名：INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING

收录：;EI(收录号：20254519455028);WOS:【SCI-EXPANDED(收录号:WOS:001614790400001)】；

基金：This work is financially supported by Projects of the National Natural Science Foundation of China (52405153, 12572088, 52130511) and by Shanghai Gaofeng Project for University Academic Program Development.

语种：英文

外文关键词：Multiaxial creep; Multiaxial stress rupture criterion; Notched plate tension; Circumferentially-notched tension; Skeletal point; GH4169

摘要：In this work the applicability of notched plate tension (NPT) and circumferentially notched tension (CNT) specimens to determine the multiaxial stress rupture criterion (MSRC) of creeping materials is evaluated by the direct and indirect methods based on the uniaxial and multiaxial (NPT and CNT specimens) creep data of a nickel-based alloy GH4169 at 650 degrees C. Also, the evaluation covers four commonly-used MSRCs, three of which (termed Type 1 hereafter) involve an adjustable factor, while the last (termed Type 2 hereafter) does not. Results indicate that the NPT specimen is probably not suitable for determining the MSRC for the alloy regardless of the determination method and the MSRC examined. This is because, for the Type 1 MSRC, the adjustable factor in each MSRC turns out to vary greatly depending on the notch size and the location on which relevant stresses are extracted. While for the Type 2 MSRC, the predicted multiaxial creep life depends on the location of stress extraction. Moreover, the determined MSRC based on the NPT specimen cannot be directly applied to predicting the creep life of CNT specimens, and vice versa. Interestingly, the use of CNT specimen with the same notch size of NPT specimen is found to be suitable for determining the MSRC. This is because when the skeletal point stresses of a CNT specimen with the same notch size of NPT specimen are used, the resulting adjustable factor becomes much less affected by the stress state and by the MSRC adopted. Moreover, the predicted lives of CNT specimens with different notch root radii agree well with the experimental counterparts when the determined adjustable factor is used.