Browsing by Author "Lee, Chuan-Hua"

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Aluminum element effect for electron beam welding of similar and dissimilar magnesium-aluminum-zinc alloys
(2007-05-01)
Chi, Chao-Ting
;
Chao, Chuen-Guang
;
Liu, Tzeng-Feng
;
Lee, Chuan-Hua
;
材料科學與工程學系
Defects causing stress concentration from electron beam welding are related to the Al content of the Mg-AI-Zn weldment and its effect will be most conspicuous for the welding of dissimilar metals. Precipitates which are gamma 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. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.