文献类型：期刊文献

英文题名：Local deformation distribution and evolution of 25cr2ni2mov welded joints under uniaxial tensile loading

作者：Ye, Fan[1]; Si, Jun[2]; Pan, Zijian[1]; Guo, Sujuan[1,4]; Zhu, Mingliang[1]; Zhao, Jian[3,4]

机构：[1] Key Laboratory of Pressure Systems and Safety, The Ministry of Education, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Shanghai Institute of Special Equipment Inspection and Technical Research, Shanghai, 200062, China; [3] School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai, 200092, China; [4] Shanghai Institute of Aircraft Mechanics and Control, Shanghai, 200092, China

年份：2025

卷号：3068

期号：1

外文期刊名：Journal of Physics: Conference Series

收录：EI(收录号：20253519092002)

语种：英文

外文关键词：Chromium alloys - Strain - Tensile strength - Vanadium alloys - Vanadium steel - Welded steel structures - Welding - Welds

摘要：This study addresses the issue of deformation mismatch caused by material heterogeneity in welded rotors of nuclear turbine generators. Focusing on a novel narrow-gap TIG/SAW hybrid weld joint of 25Cr2Ni2MoV steel, a multiscale investigation into the deformation mechanism was conducted. Mechanical properties of the steel were characterized through nanoindentation and uniaxial tensile tests, revealing the gradient distribution of mechanical properties across the weld joint. By integrating microscopic strain field evolution analysis, the study establishes a critical correlation between localized deformation concentration at heterogeneous interfaces and macroscopic instability failure. ? Published under licence by IOP Publishing Ltd.