Aluminum element effect for electron beam welding of similar and dissimilar magnesium–aluminum–zinc alloys

Defects causing stress concentration from electron beam welding are related to the Al content of the Mg–Al–Zn weldment and its effect will be most conspicuous for the welding of dissimilar metals. Precipitates which are γ phase (Mg 17(Al,Zn) 12) also influence the formative mechanism of pores, the h...

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Bibliographic Details
Published in:Scripta materialia 2007-05, Vol.56 (9), p.733-736
Main Authors: Chi, Chao-Ting, Chao, Chuen-Guang, Liu, Tzeng-Feng, Lee, Chuan-Hua
Format: Article
Language:English
Subjects:
Alloys
Aluminum
Electron beam welding
Fracture mechanics
Magnesium alloys
Porosity
Precipitates
Precipitation
Weldments
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Summary:Defects causing stress concentration from electron beam welding are related to the Al content of the Mg–Al–Zn weldment and its effect will be most conspicuous for the welding of dissimilar metals. Precipitates which are γ phase (Mg 17(Al,Zn) 12) also influence the formative mechanism of pores, the heat-affected zone and the fracture mode of the weld. More noteworthy is that the Al content of 6.0 wt.% is a very important delimitation for these mechanisms.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2007.01.028