Surface modifications of 2024 Al alloy by laser treatment

Christos N. Panagopoulos; K. G. Georgarakis; Alexis Carabelas; Alexandra Manousaki

doi:10.1117/12.513594

9 April 2003 Surface modifications of 2024 Al alloy by laser treatment

Christos N. Panagopoulos, K. G. Georgarakis, Alexis Carabelas, Alexandra Manousaki

Proceedings Volume 5131, Third GR-I International Conference on New Laser Technologies and Applications; (2003) https://doi.org/10.1117/12.513594
Event: Third GR-I International Conference on New Laser Technologies and Applications, 2003, San Diego, CA, United States

Abstract

Specimens of 2024 Al alloy (Al-4,4%Cu-1,5%Mg-0,6%Mn) were annealed at 400°C for two (2) hrs. After annealing, the alloy specimens were surface treated with a high power KrF Excimer Laser. The wavelength of laser radiation was 248 nm and the time duration of each pulse was 30 ns. The surface treatment of 2024 Al alloy was conducted by changing the value of power of the incident laser radiation. The radiation frequency was 7Hz, the overlapping was 50% and the pulses per step (pps) were 50. The changes in the power of incident laser radiation led the surface layers of the alloy to undertake various modifications. These processes were carefully studied by observing the surface modifications of the alloy with an Optical Microscope, a Scanning Electron Microscope, a X-Rays Diffractometer and a Surface Profilometer.

Citation Download Citation

Christos N. Panagopoulos, K. G. Georgarakis, Alexis Carabelas, and Alexandra Manousaki "Surface modifications of 2024 Al alloy by laser treatment", Proc. SPIE 5131, Third GR-I International Conference on New Laser Technologies and Applications, (9 April 2003); https://doi.org/10.1117/12.513594

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