文献类型：期刊文献

英文题名：Correlation between Microstructure, Hardness and Corrosion of Welded Joints of Disc Rotors

作者：Weng, S.[1]; Huang, Y.H.[1]; Xuan, F.Z.[1]; Luo, L.H.[1]

机构：[1] Key Laboratory of Safety Science of Pressurized System, MOE, School of Mechanical Engineering, East China University of Science and Technology, 130, Meilong Street, Shanghai, 200237, China

年份：2015

卷号：130

起止页码：1761

外文期刊名：Procedia Engineering

收录：EI(收录号：20161502237292)

语种：英文

外文关键词：Welding - Carbides - Microhardness - Weld decay - Heat affected zone - Corrosion resistance - Metal testing - Martensite

摘要：In the present work, correlation between microstructure, hardness and corrosion was investigated in the three different zones including base metal (BM), heat affected zone (HAZ) and weld metal (WM) of welded rotors in terms of the traditional micro-hardness testing and the potentiodynamic polarization experiments. The results revealed that Micro-hardness did not only depend on the content of martensites, since the hardness of WM was higher than that of BM, but the martensites content of BM was much more than that in WM. The precipitation of carbides increased as the width of lathy tempered martensites grows larger, which caused the hardness increasing and the corrosion resistance decreasing. In addition, with the decreasing of the grain size, the higher the hardness value and the corrosion resistance were increasing. ? 2015 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.