Relationship between microstructure, microhardness and corrosion sensitivity of an AA 2024-T3 friction stir welded joint
Idioma
en
Article de revue
Este ítem está publicado en
Corrosion Science. 2011, vol. 53, n° 9, p. 3026-3034
Elsevier
Resumen en inglés
Corrosion sensitivity of a friction stir welded (FSW) AA2024-T3 aluminum alloy has been investigated using both normalized intergranular corrosion test (ASTM-G110) and local electrochemical open circuit potential measurements. ...Leer más >
Corrosion sensitivity of a friction stir welded (FSW) AA2024-T3 aluminum alloy has been investigated using both normalized intergranular corrosion test (ASTM-G110) and local electrochemical open circuit potential measurements. In addition, Vickers microhardness and microstructural analysis have been performed. The HAZ close to the TMAZ is the most sensitive to intergranular corrosion because of the presence of continuous lines of S′(S) intergranular precipitates at grain boundaries. Pitting corrosion is due to the intermetallic particles. Their fragmentation produced by stirring effect modifies the pitting corrosion behavior. Microhardness variations depend on the relative volume fraction of GPB zones and S′(S) intragranular precipitates.< Leer menos
Palabras clave en inglés
Aluminum alloys
Welding
Pitting corrosion
Intergranular corrosion
Orígen
Importado de HalCentros de investigación