Corrosion behavior of laser-remelted aluminum alloy

Hanna Pokhmurska; Lech Kwiatkowski; Wojciech Kalita; Jacek Hoffman

doi:10.1117/12.520759

6 October 2003 Corrosion behavior of laser-remelted aluminum alloy

Hanna Pokhmurska, Lech Kwiatkowski, Wojciech Kalita, Jacek Hoffman

Proceedings Volume 5229, Laser Technology VII: Applications of Lasers; (2003) https://doi.org/10.1117/12.520759
Event: Laser Technology VII: Applications of Lasers, 2002, Szczecin, Poland

Abstract

The laser surface melting of AA2024-T3 alloy modified a structure of surface layer resulting in cells and/or cellular dendrites of very fine microstructure. There are mainly two phases, i.e. primary solid solution and precipitated Al₂Cu phase, around the cell boundaries. Some minor traces of Fe and Mn are also present. The estimated decrease of Cu content in precipitates is approximately 25%. The susceptibility to pitting corrosion of laser melted AA2024-T3 surfaces characterised by pitting potential was not improved in comparison with as-received material, mainly due to non-uniform structure at subsequent laser tracks.

Citation Download Citation

Hanna Pokhmurska, Lech Kwiatkowski, Wojciech Kalita, and Jacek Hoffman "Corrosion behavior of laser-remelted aluminum alloy", Proc. SPIE 5229, Laser Technology VII: Applications of Lasers, (6 October 2003); https://doi.org/10.1117/12.520759

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