COMPORTAMENTO EM CORROSÃO DE JUNTAS SOLDADAS DE AÇOS INOXIDÁVEIS EM MEIOS CONTENDO ÍONS CLORETOS

The behavior in stress corrosion cracking (SCC) of ferritic stainless steels welded with austenitic stainless steels was evaluated in aqueous solutions containing 3.5 (weight%) NaCl, and 42 (weight%) MgCl2 have been employed. The experiments included constant load and constant deformation of the ele...

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Bibliographic Details
Published in:Tecnologia em metalurgia, materiais e mineração materiais e mineração, 2006-10, Vol.3 (2), p.6
Main Authors: Vieira, David Herbert, Pinto, Daniel Fraga, Carvalho, José Antonio N de, Bálsamo, Paulo Sérgio de S, Godefroid, Leonardo Barbosa, Cândido, Luiz Cláudio
Format: Article
Language:Portuguese
Subjects:
Aqueous solutions
Austenitic stainless steels
Cracks
Deformation
Ferritic stainless steels
Fractography
Fracture mechanics
Stainless steel
Stress corrosion cracking
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Summary:The behavior in stress corrosion cracking (SCC) of ferritic stainless steels welded with austenitic stainless steels was evaluated in aqueous solutions containing 3.5 (weight%) NaCl, and 42 (weight%) MgCl2 have been employed. The experiments included constant load and constant deformation of the electrode. Metodology of mechanical fracture was applied where precracked compact type - C(T)s - specimens have been used. Their fractographic aspects after SCC were analyzed. It was verified that the materials in study were SCC susceptible in aqueous solution containing 42 weight% MgCl2. It was noticed that the cracks start from the precrack in the austenitic area and it continues inside the ferritic area.
ISSN:2176-1515
2176-1523
DOI:10.4322/tmm.00302002