Enhancing Corrosion Resistance of 304 Stainless Steel GMA Welds with Electromagnetic Interaction
2011 Volume 52 Issue 8 Pages 1701-1704
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2011 Volume 52 Issue 8 Pages 1701-1704
Plates of AISI 304 stainless steel were gas metal arc welded under the effect of an electromagnetic interaction. Samples of the heat affected zone were subjected to the double loop electrochemical potentiokinetic reactivation technique to evaluate the degree of sensitization (DOS). The as-received plates had a significant DOS whereas samples welded under electromagnetic interaction presented lower DOS as compared with samples plainly welded. The reduction in the DOS suggests that the electromagnetic interaction enables Cr redistribution in the austenitic grains during welding reducing Cr depleted zones.
