Consequences of Nd:YAG Laser Welding Al-Mg and Al-Mg-Si Alloys.

摘要

Aluminum alloys 6061, 5456, and 5086 were fusion welded with both pulsed and continuous wave Nd:YAG laser processing. Continuous welds were made with a Holobeam 6-head, 600 watt laser operated at full power (approx. 675 watts). The pulsed welds were made with a Raytheon SS-501-7,400 watt laser operated at 180 watts average power. The experimental details have been reported previously. The purpose of the work was to characterize the effect of Nd:YAG laser welding on the soundness (hot-cracking susceptibility), fusion zone chemistry modification by preferential vaporization of volatile elements, and mechanical response (hardness) of these alloys. 5 refs., 3 figs. (ERA citation 14:000905)