文献类型：期刊文献

英文题名：Correlation between microstructure, hardness and strength in HAZ of dissimilar welds of rotor steels

作者：Zhu, Ming-Liang[1];Xuan, Fu-Zhen[1]

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

年份：2010

卷号：527

期号：16-17

起止页码：4035

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

收录：;EI(收录号：20102212970797);WOS:【SCI-EXPANDED(收录号:WOS:000278766800054)】；

基金：The authors are grateful for the supports provided by National Natural Science Foundations of China (50835003, 10972078). FZ would also wish to thank the Research Fund for Doctoral Program of Higher Education (200802510003) and Natural Science Foundation of Shanghai (09JC1404400).

语种：英文

外文关键词：Nano-hardness; Micro-hardness; Strength distribution; HAZ

摘要：Correlation between microstructure, hardness and strength was investigated in heat affected zone (HAZ) of dissimilar welding joints of newly developed rotor steels in terms of both the traditional micro-hardness testing and the nanoindentation technique. Relationships between micro-hardness and nano-hardness were obtained for HAZ of welds, where the mechanical properties were microstructure dependent. Lath width of the tempered martensites was selected as the characteristic microstructure size for correlating the micro-hardness. The detailed strength distribution in HAZ and the correlation with the characteristic microstructure size were discussed. A good agreement was observed for the correlated strength and the experimental results in both weld metal (WM) and base metal (BM), and therefore gave us confidence for the application of the proposed relationship between the hardness and the mechanical properties in HAZ of the dissimilar weld. (C) 2010 Elsevier B.V. All rights reserved.