Nd:YAG laser welding of aluminum alloy assisted by high-peak pulsed lasers

Toshihiko Ooie; Akihiro Utsumi; Tetsuo Yano

doi:10.1117/12.497779

3 March 2003 Nd:YAG laser welding of aluminum alloy assisted by high-peak pulsed lasers

Toshihiko Ooie, Akihiro Utsumi, Tetsuo Yano

Proceedings Volume 4831, First International Symposium on High-Power Laser Macroprocessing; (2003) https://doi.org/10.1117/12.497779
Event: LAMP 2002: International Congress on Laser Advanced Materials Processing, 2002, Osaka, Japan

Abstract

Nd:YAG laser welding of an aluminum alloy assisted by high-peak pulsed lasers such as excimer and Q-switched Nd:YAG laseers was investigated. In this novel laser hybrid welding, a plasma induced by a high-peak power laser absorbs the Nd:YAG laser energy and transmits it to a work piece. In the laser welding of the aluminum alloy using the Nd:YAG laser of which maximu power was 6 kW, the heat input and the penetration depth increased by 20% and 8%, respectively, by using simultaneous irradiation of the excimer laser of which average power was only 16 W. According to the optical emission of the plasmas, not only KrF excimer laser but also 2nd harmonic of a Q-switched Nd:YAG laser is applicable for the laser hybrid welding as the high-peak pulsed laser.

Citation Download Citation

Toshihiko Ooie, Akihiro Utsumi, and Tetsuo Yano "Nd:YAG laser welding of aluminum alloy assisted by high-peak pulsed lasers", Proc. SPIE 4831, First International Symposium on High-Power Laser Macroprocessing, (3 March 2003); https://doi.org/10.1117/12.497779

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