Product Code: ICA12_1103

Dissimilar Metal Joining of Mg Alloy to Al Alloy by Laser Brazing Process
Sook Hwan Kim, Research Institute of Industrial Science of Technology; Pohang South Korea
Y. Norman Zhou, Center for Advanced Materials Joining, Univ. of Waterloo; - Canada
LiQun Li, Harbin Institute of Technology; -
Ali Nasin, Center for Advanced Materials Joining, Univ. of Waterloo; -
Presented at ICALEO 2012

Laser brazing between commercially Mg alloy(AZ31) and Al alloy has been carried out in the Mg-based and Al-based insert metals. The brazement has been evaluated using optical microscopy, micro vickers hardness, electron probe micro-analysis (EPMA) and tensile shear testing. Optical microscopy shows that different intermediate layers are formed in the reaction zone, and these layers change with the kind of insert metal. EPMA revealed that, at any particular insert metal, MgAl-rich phase formed in the cell boundary of the Mg alloy side.

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