文献类型：期刊文献

英文题名：Deflection behaviour of corrosion crack growth in the heat affected zone of CrNiMoV steel welded joint

作者：Luo, Linghua[1];Huang, Yuhui[1];Xuan, Fu-Zhen[1]

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

年份：2017

卷号：121

起止页码：11

外文期刊名：CORROSION SCIENCE

收录：;EI(收录号：20171303498136);WOS:【SCI-EXPANDED(收录号:WOS:000401597700002)】；

基金：The authors are grateful for the supports provided by National Natural Science Foundation of China (51325504) and the Program of Shanghai Subject Chief Scientist under award No. 14XD1401300.

语种：英文

外文关键词：Low alloy steel; Stress corrosion; Welding

摘要：Stress corrosion cracking (SCC) growth tests in heat affected zone (HAZ) of 25Cr2Ni2MoV steel welded joint were conducted in 3.5 wt.% NaCI solution at 180 degrees C. The deflection of SCC towards the hard side of HAZ was observed interestingly, which was ascribed to the combined effect of the graded mechanical and electrochemical properties in HAZ. In addition, the initiation of SCC deflection was related to the crack-tip in-plane constraint. Through the specimen thickness, higher crack-tip out-of-plane constraint on the mid-thickness plane caused a preferential SCC deflection compared to that on the surface. (C) 2017 Elsevier Ltd. All rights reserved.