文献类型：期刊文献

英文题名：Very high cycle fatigue behavior of a low strength welded joint at moderate temperature

作者：Zhu, Ming-Liang[1];Xuan, Fu-Zhen[1];Du, Yan-Nan[1];Tu, Shan-Tung[1]

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

年份：2012

卷号：40

起止页码：74

外文期刊名：INTERNATIONAL JOURNAL OF FATIGUE

收录：;EI(收录号：20121114857927);WOS:【SCI-EXPANDED(收录号:WOS:000302515400009)】；

基金：The authors are grateful for the supports provided by National Natural Science Foundations of China (50835003, 10972078) and National High Technology Research and Development Program of China (2009AA044802).

语种：英文

外文关键词：Very high cycle fatigue; Welded joint; Inclusions; Oxidation; Residual stresses

摘要：Very high cycle fatigue (VHCF) behavior of a low strength weldment was investigated by fully reversed axial tests in air at room temperature and 370 degrees C. The role of non-metallic inclusions in the VHCF was addressed in terms of experimental results and finite element simulations. The higher potential for interior crack nucleation at higher temperature was ascribed to matrix softening, surface oxidation and surface compressive residual stress. A new model for interpretation of the role of inclusion in the transition of crack initiation modes was developed. (C) 2012 Elsevier Ltd. All rights reserved.