Laser peening without coating on aluminum alloy Al-6061-T6 using low energy Nd:YAG laser
Abstract
The present study investigates the effect of laser peening without coating on aluminum alloy Al-6061-T6 with a 300 mJ infrared laser. The surface topography, microstructure, surface topography, surface residual stress and micro-hardness of peened and unpeened surfaces were studied. The study shows that laser peening without coating can significantly improve surface compressive stress and micro-hardness with trivial increase in surface roughness. Microstructure evaluation confirmed there was no near surface solidification after LPwC.
- Publication:
-
Optics Laser Technology
- Pub Date:
- February 2013
- DOI:
- 10.1016/j.optlastec.2012.06.019
- Bibcode:
- 2013OptLT..45..389S