|
|||||
|
|
Influence of the microstructure and laser shock processing (LSP) on the corrosion behaviour of the AA2050-T8 aluminium alloy |
|
| Authors: | H. Amar V. Vignal H. Krawiec C. Josse P. Peyre S.N. da Silva L.F. Dick |
| Affiliation: | aICB, UMR 5209, CNRS-Université de Bourgogne, BP 47870, 21078 Dijon, France;bAGH, University of Science and Technology, ul. Reymonta 23, 30-059 Krakow, Poland;cPIMM, UMR 8006, CNRS-Arts et Métiers Paritech, 151 Bd de l’Hôpital, 75013 Paris, France;dDepartment of Metallurgy, Federal University of Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500 Bl. 4, Prédio 75, Porto Alegre, RS 91501-970, Brazil |
| Abstract: | 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. |
| Keywords: | A. Aluminium alloy B. Polarization C. Intergranular corrosion C. Pitting corrosion C. Effects of strain |
| 本文献已被 ScienceDirect 等数据库收录！ | |