Optimizing welding condition for excellent corrosion resistance in duplex stainless steel linepipe

被引：0
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作者：
Tamaki, Katsuomi
Yasuda, Koichi
Kimura, Mitsuo
Kawasaki, Hiroaki
Uegaki, Tatsufumi
机构：
来源：
Kawasaki Steel Technical Report | 1988年 / 19期
关键词：
Gas Pipelines--Welding - Pipe; Steel--Welding; -; Welding; Electric Arc--Optimization;
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学科分类号：
摘要：
The corrosion resistance of the girth weld heat affected zone (HAZ) of duplex stainless steels was discussed in connection with hostile environment linepipe applications. The girth weld HAZ produced with a slow cooling rate welding procedure using a high pitting index base metal showed the same corrosion resistance as the base metal, even in the as-welded condition. It was concluded that the slow cooling rate allows sufficient time for the chromium to heal the chromium depleted area adjacent to chromium nitride precipitates.
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页码：10 / 16
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