Effect of magnetic field applied during gas metal arc welding on the resistance to localised corrosion of the heat affected zone in AISI 304 stainless steel

被引：62

作者：

Curiel, F. F. ^{[2
]}

Garcia, R. ^{[2
]}

Lopez, V. H. ^{[2
]}

Gonzalez-Sanchez, J. ^{[1
]}

机构：

[1] Univ Autonoma Campeche, Ctr Invest Corros, Campeche 24039, Cam, Mexico

[2] Univ Michoacana, Inst Invest Met, Morelia 58000, Michoacan, Mexico

来源：

CORROSION SCIENCE | 2011年 / 53卷 / 07期

关键词：

Stainless steels; Polarisation; STEM; Intergranular corrosion; Pitting corrosion; Welding; AUSTENITIC STAINLESS-STEEL; COLD WORK; SENSITIZATION; MICROSTRUCTURE; BEHAVIOR; MARTENSITE; CARBIDE; DECAY;

D O I：

10.1016/j.corsci.2011.03.022

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Resistance to localised corrosion at the heat affected zone (HAZ) of AISI 304 stainless steel gas metal arc welded (GMAW) in presence of magnetic fields of different intensity was studied. Samples of HAZ, 8 mm away from the weld centre, were subjected to electrochemical potentiokinetic reactivation to assess the degree of sensitisation (DOS). The application of magnetic field during welding induced lower DOS and better resistance to pitting corrosion in 3.5% NaCl solution than samples welded without it. Experimental findings suggest that magnetic fields enable Cr redistribution in the austenitic base metal during the welding thermal cycle reducing Cr depletion. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：2393 / 2399

页数：7

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