文献类型：期刊文献

英文题名：Creep behavior of subzones in a CrMoV weldment characterized by the in-situ creep test with miniature specimens

作者：Yang, Bin[1,2];Xuan, Fu-Zhen[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Minist Educ, Key Lab Pressure Syst & Safety, Shanghai 200237, Peoples R China;[2]China Univ Petr East China, Coll Chem Engn, State Key Lab Heavy Oil Proc, Qingdao 266580, Peoples R China

年份：2018

卷号：723

起止页码：148

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

收录：;EI(收录号：20181204931332);WOS:【SCI-EXPANDED(收录号:WOS:000430784400017)】；

基金：Supports from National Natural Science Foundation of China (Grants No.: 51475167, 51605165), Qingdao Postdoctoral Applied Research Project (Grants No: BY20170211), the Fundamental Research Funds for the Central Universities (Grants No: 18CX02149A), UPC project (Grants No: YJ20170018), are greatly acknowledged.

语种：英文

外文关键词：In-situ creep; Weldment; Creep

摘要：The local creep properties of a CrMoV weldment were acquired by using miniature specimens of in-situ creep test. The creep performances of heat-affected zone (HAZ), weld pass metal in the welding direction (WP) and multiple weld passes through the thickness direction (MWP) were compared with each other. It is shown that the magnitudes of creep strength order satisfy WP > MWP > HAZ, while the creep ductility of these three samples exhibit an inverse order: WP < MWP < HAZ. In addition, the typical three-stage creep deformation curves are observed in both WP and MWP samples. However, no significant difference between the primary and the secondary stages is detected for HAZ sample.