Corrosion resistance of 13% chromium stainless steel welded joints in flow line applications

被引：0
|
作者：
Ueda, M [1 ]
Amaya, H [1 ]
Hirata, H [1 ]
Kondo, K [1 ]
Murata, Y [1 ]
Komizo, Y [1 ]
机构：
[1] Sumitomo Met Ind Ltd, Corp Res & Dev Labs, Tokyo, Japan
来源：
ADVANCES IN CORROSION CONTROL AND MATERIALS IN OIL AND GAS PRODUCTION | 1999年 / 26期
关键词：
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The mechanical properties and sulfide stress corrosion (SSC) resistance of weldable surer 13Cr stainless steel welded joints were investigated in flow line application The joints welded by Gas Tungsten Arc (CTA) and Gas Metal Arc (GMA) using matching or over-matching weld metal, consisting of super duplex stainless steel, without any preheating and post weld heal treatment (PWHT), showed strength and toughness and good SSC resistance. However, in the welded joint with the under-matching weld metal that would be adequate for conventional 22Cr duplex stainless steel, SSC occurred near the fusion line. These SSC results could be explained by the stress concentration, obtained by FEM calculation, near the fusion line with the under-matching weld metal. Such stress concentration did not exist in the welded joint with the matching or over-matching weld metal. From these results, the super duplex stainless steel was recommended as a suitable material in the welding of super 13Cr stainless steel pipes.
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页码：267 / 273
页数：7
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