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Home  >  Journal list  >  Science and Technology of Advanced Materials  >  Vol.6  No.2 (2005)  >  pp.199-204

Science and Technology of Advanced Materials
<<Previous article Vol.6  No.2 (2005)   pp.199 - 204 Next article>>

Dissimilar material laser welding between magnesium alloy AZ31B and aluminum alloy A5052-O

Rattana Borrisutthekul, Yukio Miyashita and Yoshiharu Mutoh
Department of Mechanical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka-shi 940-2188, Japan

Joining technology of lightweight dissimilar metals between magnesium and aluminum alloys is essential for realizing hybrid structure cars and other engineering applications. In the present study, the normal center-line welding of lap joint was carried out by laser welding. It was found that the intermetallic layer formed near interface between two metals significantly degraded the joining strength. FEM heat transfer analysis was carried out to find out an available method to control penetration depth and width of molten metal, which contributes to control thickness of intermetallic compound layer. Based on the results of FEM analysis, the edge-line welding of lap joint was carried out, which could easily control the thickness of intermetallic layer and successfully obtained high joining strength.


Keyword:
Dissimilar metal joint; Laser welding; Lap joint; Light weight metal; Magnesium alloy; Aluminum alloy

Received: September 15, 2004 , Revised: October 20, 2004
Accepted: November 24, 2004 , Published online: March 24, 2005
Copyright © 2005 Elsevier Ltd All rights reserved.

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