Sensitization resistance of friction stir welded AISI 409 M grade ferritic stainless steel joints

被引：0
|
作者：
A. K. Lakshminarayanan
V. Balasubramanian
机构：
[1] Annamalai University,Centre for Materials Joining and Research (CEMAJOR), Department of Manufacturing Engineering
来源：
The International Journal of Advanced Manufacturing Technology | 2012年 / 59卷
关键词：
Ferritic stainless steel; Friction stir welding; Sensitization;
D O I：
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学科分类号：
摘要：
Friction stir welded low chromium AISI 409 M ferritic stainless steel was investigated for susceptibility to intergranular corrosion by oxalic and double-loop electrochemical potentiodynamic reactivation tests, and the degree of sensitization were evaluated by the ratio of the reactivating and activating currents. Stir zone of friction stir welded joint exhibited smaller degree of sensitization compared to the base metal and it is mainly due to fine grains and lower heat input nature of friction stir welding process. Heat-affected zone showed larger current ratio and higher degree of sensitization compared to stir zone and base metal region and not to the extent that has been reported in the literature for arc welding.
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页码：961 / 967
页数：6
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