文献类型：期刊文献

英文题名：Local fracture resistance behavior of interface regions in a dissimilar metal welded joint

作者：Fan, K.[1];Wang, G. Z.[1];Xuan, F. Z.[1];Tu, S. T.[1]

机构：[1]E China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China

年份：2015

卷号：136

起止页码：279

外文期刊名：ENGINEERING FRACTURE MECHANICS

收录：;EI(收录号：20153301175110);WOS:【SCI-EXPANDED(收录号:WOS:000350961600020)】；

基金：This work was financially supported by the Projects of the National Natural Science Foundation of China (51375165, 51325504).

语种：英文

外文关键词：Fracture resistance; Interface region; Dissimilar metal welded joint; Material constraint; Mismatch

摘要：The finite element method based on Gurson-Tvergaard-Needleman damage mechanics model is used to investigate local fracture resistance behavior of two interface regions in a dissimilar metal welded joint. The variation of local fracture resistance with crack locations is analyzed by local material constraint effect. The results show that when initial cracks are located in hard and soft materials in interface regions, respectively, the local material constraint has opposite effect on local fracture resistance. The degree and distance range of material constraint effect increase with increasing the degree of mismatches in yield strength and work hardening between two materials. (C) 2015 Elsevier Ltd. All rights reserved.