Annealing temperature effect on the pitting corrosion resistance of plasma arc welded joints of duplex stainless steel UNS S32304 in 1.0 M NaCl

被引：73

作者：

Tan, Hua ^{[1
]}

Wang, Zhiyu ^{[2
]}

Jiang, Yiming ^{[1
]}

Han, Dong ^{[1
]}

Hong, Jufeng ^{[1
]}

Chen, Lindou ^{[1
]}

Jiang, Laizhu ^{[2
]}

Li, Jin ^{[1
]}

机构：

[1] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China

[2] Baosteel Co Ltd, Ctr Res & Dev, Shanghai 201900, Peoples R China

来源：

CORROSION SCIENCE | 2011年 / 53卷 / 06期

基金：

美国国家科学基金会;

关键词：

Stainless steel; Welding; Pitting corrosion; HEAT-AFFECTED ZONES; MECHANICAL-PROPERTIES; SECONDARY AUSTENITE; MICROSTRUCTURE; PRECIPITATION; CHROMIUM; ION;

D O I：

10.1016/j.corsci.2011.02.041

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pitting corrosion resistance of 2304 duplex stainless steels after autogenous plasma-arc welding and subsequent short-time post-weld heat treatment at different temperatures, determined by critical pitting temperature in 1.0 M NaCl solution, has been investigated. The results showed that the as-welded joint displayed impaired pitting corrosion resistance and that pitting preferentially occurred at ferrite grain in heat-affected zone near the fusion line. Short-time annealing treatment at 1020-1120 degrees C has a beneficial effect on the pitting corrosion resistance of welded joint. The most favorable annealing temperature for the analyzed welded joints was found to be 1080 degrees C, at which the joint restored the pitting corrosion resistance lost during welding entirely. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：2191 / 2200

页数：10

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