Effect of post-weld heat treatment on microstructure evolution and pitting corrosion behavior of UNS S31803 duplex stainless steel welds

被引：146
作者：
Zhang, Ziying [1 ,2 ,3 ]
Wang, Zhiyu [4 ]
Jiang, Yiming [1 ]
Tan, Hua [1 ]
Han, Dong [1 ]
Guo, Yanjun [1 ]
Li, Jin [1 ]
机构：
[1] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China
[2] Shihezi Univ, Dept Phys, Key Lab Ecophys, Shihezi 832003, Peoples R China
[3] Yili Normal Univ, Xinjiang Lab Phase Transit & Microstruct Condense, Yining 835000, Peoples R China
[4] Baosteel Co Ltd, Ctr Res & Dev, Shanghai 201900, Peoples R China
来源：
CORROSION SCIENCE | 2012年 / 62卷
基金：
中国国家自然科学基金;
关键词：
Stainless steel; Welding; Pitting corrosion; MECHANICAL-PROPERTIES; LOCALIZED CORROSION; ANNEALING TREATMENT; SIGMA-PHASE; TEMPERATURE; RESISTANCE; INPUT; PRECIPITATION; SEAWATER;
D O I：
10.1016/j.corsci.2012.04.047
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of tungsten inert gas welding and subsequent post-weld heat treatment on the microstructure evolution and pitting corrosion behavior of duplex stainless steel UNS 531803 was investigated. Detailed microstructure examination demonstrates that ferrite presents higher volume fraction and is easier to suffer attack of pitting corrosion than austenite in the welded zone of as-welded metal. After post-weld heat treatment, the volume fraction of austenite in the heat affected zone and weld metal is elevated significantly. The highest pitting corrosion resistance is obtained at 1080 degrees C with the highest critical pitting temperature and pitting nucleation resistance. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：42 / 50
页数：9
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