Influence of the microstructure and laser shock processing (LSP) on the corrosion behaviour of the AA2050-T8 aluminium alloy

Article dans une revue avec comité de lecture
Auteur
AMAR, Hassan
300270 Université de Bourgogne [UB]
KRAWIEC, Halina
445585 AGH University of Science and Technology [Krakow, PL] [AGH UST]
JOSSE, Claudie
300270 Université de Bourgogne [UB]
PEYRE, Patrice
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
DA SILVA, S. N.
302610 Universidade Federal do Rio Grande do Sul [Porto Alegre] [UFRGS]
DICK, Luis Federico
302610 Universidade Federal do Rio Grande do Sul [Porto Alegre] [UFRGS]

URI
http://hdl.handle.net/10985/17638
DOI
10.1016/j.corsci.2011.05.066
Date
2011
Journal
Corrosion Science

Résumé

The corrosion behaviour of AA2050-T8 was studied after polishing and after laser shock processing (LSP) treatment using the electrochemical microcell technique and the SVET. After polishing, pitting at constituent particles and intergranular corrosion were observed. By contrast, no intergranular corrosion developed after LSP. Microcell measurements revealed that LSP increases the pitting potential. SVET measurements revealed that local anodic currents are systematically lower on LSP-treated surfaces than on polished ones. The current density on the LSP-treated surface remains constant around 50 μA cm−2 up to 123 min after immersion, while on the polished surface it reaches 200 μA cm−2.

Fichier(s) constituant cette publication

Nom:
PIMM _CS_ 2011_PEYRE.pdf
Taille:
1.116Mo
Format:
PDF
Description:
Article
Voir/Ouvrir

Cette publication figure dans le(s) laboratoire(s) suivant(s)