压力容器Issue(11)：1-11,20,12.DOI:10.3969/j.issn.1001-4837.2014.11.001
基于原位拉伸的 CrMoV 钢焊接接头局部力学性能研究
Heterogeneous Mechanical Property and Microstructure of Welded Joints of CrMoV Steel
摘要
Abstract
The local mechanical properties of dissimilar welding joint of steam turbine rotor were investiga-ted by using micro tensile test,and the local microstructure observation and micro -hardness in the joint were characterized and analyzed.The heterogeneous microstructure distribution in weld metal were exhibi-ted and discussed.Higher tensile strength of the circumferential specimens than that of the radial and axi-al specimens in the weld metal was obtained due to the various grains and microstructure distribution;and weaker tensile strength exhibited in the welding center equiaxed grain zone than that in the weld beads because of the weaker grain boundaries.And it can be concluded that the welding center equiaxed grain zone is the vulnerable zone of the weld metal.关键词
局部力学性能/微观组织/显微硬度/焊缝/晶粒Key words
local mechanical properties/microstructure/micro -hardness/weld metal/grain分类
机械制造引用本文复制引用
刘新平,轩福贞..基于原位拉伸的 CrMoV 钢焊接接头局部力学性能研究[J].压力容器,2014,(11):1-11,20,12.基金项目
国家自然科学基金 （）
