6533b824fe1ef96bd12815a6
RESEARCH PRODUCT
Influence of the microstructure and laser shock processing (LSP) on the corrosion behaviour of the AA2050-T8 aluminium alloy
Vincent VignalClaudie JossePatrice PeyreHalina KrawiecH. AmarS.n. Da SilvaLuis Frederico Pinheiro Dicksubject
Materials scienceMatériaux [Sciences de l'ingénieur]Aluminium alloyGeneral Chemical EngineeringPolishing02 engineering and technologyCorrosion[SPI.MAT]Engineering Sciences [physics]/Materials0203 mechanical engineeringIntergranular corrosionPolarizationPitting corrosionAluminium alloyGeneral Materials SciencePitting corrosionPolarization (electrochemistry)MetallurgyAluminium alloy - Polarization - Intergranular corrosion - Pitting corrosion - Effects of strainGeneral ChemistryIntergranular corrosion021001 nanoscience & nanotechnologyMicrostructureEffects of strain020303 mechanical engineering & transportsvisual_artvisual_art.visual_art_medium0210 nano-technologyCurrent densitydescription
International audience; 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-10-01 |