The influence of adhesive on the Al alloy in laser weld bonding Mg–Al process



Laser weld bonding is a new welding technology, being used to join Mg–Al alloys. The penetration depth of LWB Mg–Al joint was larger than that in simply laser welding joint in same welding parameters. The temperature at the edge of the Al fusion zone in LWB Mg–Al joint was higher than that in laser welding joint, which was measured through the thermal couples. The laser-introduced plasma in LWB Mg–Al process is observed by the high-speed camera, which is different from that in laser welding process. The surface temperature and state of the Al alloy were changed because of the addition of the adhesive, thus the laser absorptive of Al alloy was increased in LWB process, comparing with that in laser welding process; and the decomposition of the adhesive would make a depression in the Al fusion zone, which would be beneficial to the formation of keyhole welding in LWB Mg–Al joint.


Welding Fusion Zone Laser Welding Friction Stir Welding Hybrid Welding 



The authors really appreciate the supports from National Natural Science Funds for Distinguished Young Scholar (51025520) and Fundamental Research Funds for the Central Universities (DUT10ZD108).


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© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.Department of Materials Science and Engineering, Key Laboratory of Liaoning Advanced Welding and Joining TechnologyDalian University of TechnologyDalianChina

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