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Structure and mechanical properties of AZ31 magnesium alloy billets by different hot-top semi-continuous casting technology

Content Provider	Springer Nature Link
Author	Zhang, Zhiqiang Le, Qichi Cui, Jianzhong
Copyright Year	2011
Abstract	AZ31 alloy billets of 200 mm in diameter were produced by three different processes of conventional direct chill (DC) casting, low-frequency electromagnetic casting (LFEC) and low-frequency electromagnetic vibration casting (LFEVC), respectively. The effect of LFEC and LFEVC on the microstructures, macrosegregation and mechanical properties of AZ31 alloy billets was investigated. In conventional DC casting, the AZ31 alloy billets exhibited coarse grains (about 370 μm) and severe segregation of Al and Zn. In the presence of a solo low-frequency alternating magnetic field or a low-frequency electromagnetic vibration field applied during DC casting of ϕ200 mm AZ31 billets, grains in the AZ31 alloy billets were effectively refined (about 210 μm) and the macrosegregation of Al and Zn in the billets was greatly decreased. Furthermore, the tensile strength, fracture elongation and hardness of the as-cast AZ31 alloy billets were improved by the processes of LFEC and LFEVC relative to that cast by the process of conventional DC casting.
Starting Page	414
Ending Page	418
Page Count	5
File Format	PDF
ISSN	10010521
Journal	Rare Metals
Volume Number	30
Issue Number	4
e-ISSN	18677185
Language	English
Publisher	Nonferrous Metals Society of China
Publisher Date	2011-08-03
Publisher Place	Springer Berlin Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	magnesium alloys electromagnetic field microstructure macrosegregation mechanical properties casting Metallic Materials Surfaces and Interfaces, Thin Films Ceramics, Glass, Composites, Natural Methods Nanotechnology Physical Chemistry Inorganic Chemistry
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Metals and Alloys Physical and Theoretical Chemistry Condensed Matter Physics

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