The effect of large heat input on the microstructure and corrosion behaviour of simulated heat affected zone in 2205 duplex stainless steel

被引：176
作者：
Yang, Yinhui [1 ]
Yan, Biao [1 ]
Li, Jie
Wang, Jia
机构：
[1] Tongji Univ, Sch Mat Sci & Engn, Shanghai 200092, Peoples R China
来源：
CORROSION SCIENCE | 2011年 / 53卷 / 11期
关键词：
Stainless steel; Thermal cycling; Pitting corrosion; Intergranular corrosion; PITTING CORROSION; PROPERTY; CHLORIDE; TIME;
D O I：
10.1016/j.corsci.2011.07.022
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the simulated heat affected zone of 2205 duplex stainless steels, effects of large welding heat inputs on the microstructure and corrosion behaviour were investigated. Reformed austenite content increased with the coarsening of grain boundary austenite (GBA) and the growth of intragranular austenite (IGA) and Widmanstatten austenite (WA), thus improving the low temperature toughness and affecting corrosion state. Reduction of chromium nitrides contributed to better resistance to pitting corrosion. Moreover, the pitting corrosion and intergranular corrosion were improved resulting from the formation of more GBA and WA. The specimen with a Delta t(8/5) of 100 s presents better comprehensive performance. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3756 / 3763
页数：8
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