文献类型：期刊文献

英文题名：Heterogeneous creep behavior of a CrMoV multi-pass weld metal

作者：Yang, Bin[1];Xuan, Fu-Zhen[1];Liu, Xin-Ping[1]

机构：[1]East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2017

卷号：690

起止页码：6

外文期刊名：MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

收录：;EI(收录号：20170903397418);WOS:【SCI-EXPANDED(收录号:WOS:000399511400002)】；

基金：Supports from National Natural Science Foundation of China (Grants no. 51475167) and the Program of Shanghai Subject Chief Scientist (14XD1401300) are greatly acknowledged.

语种：英文

外文关键词：Inhomogeneous microstructure; Creep behavior; Multi-pass weld; Damage

摘要：Effect of inhomogeneous microstructure of a CrMoV multi-pass weld metal on creep behavior was investigated experimentally. Four subzones in the multi-pass weld metal were identified in terms of the grain size and morphology. Compared to the micro-hardness and tensile strength, a remarkable different creep behavior was achieved for different subzones. Especially, the heterogeneous creep deformation was observed during the tertiary creep stage. Such a heterogeneous creep behavior of multi-pass weld metal was ascribed to the coupling effect of inhomogeneous microstructure and loading direction.