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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.52  No.8 (2011)  >  pp.1701-1704

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Enhancing Corrosion Resistance of 304 Stainless Steel GMA Welds with Electromagnetic Interaction

Francisco F. Curiel1), Rafael García1), Victor H. López1) and Jorge González-Sánchez2)
1) Instituto de Investigaciones Metalúrgicas, Universidad Michoacana de San Nicolás de Hidalgo
2) Centro de Investigación en Corrosión, Universidad Autónoma de Campeche

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.

magnetic field, welding, sensitization, heat affected zone, stainless steels

Received: March 29, 2011
Accepted: May 24, 2011 , Published online: July 25, 2011
Copyright (c) 2011 The Japan Institute of Metals



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