The effect of aluminium content on the eutectic morphology of high pressure die cast magnesium-aluminium alloys

被引：23
|
作者：
Dargusch, M. S. [1 ,2 ]
Nave, M. [2 ]
McDonald, S. D. [1 ,2 ]
StJohn, D. H. [1 ]
机构：
[1] Univ Queensland, Sch Mech & Min Engn, Def Mat Technol Ctr, Brisbane, Qld 4072, Australia
[2] Univ Queensland, Sch Mech & Min Engn, CAST Cooperat Res Ctr, Brisbane, Qld 4072, Australia
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 492卷 / 1-2期
关键词：
Magnesium; High pressure die casting; Microstructure; HEAT-TRANSFER COEFFICIENT; MICROSTRUCTURE; TITANIUM; SILICON; AZ91D;
D O I：
10.1016/j.jallcom.2009.11.199
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Increasing aluminium levels in high pressure die cast Mg-Al alloys results in an increase in the volume fraction of eutectic Mg(17)Al(12) with a change in its morphology from fully divorced through to fibrous. Comparison with work undertaken at slower cooling rates shows that the primary alpha-Mg morphology has a more significant effect on the eutectic Mg(17)Al(12) morphology than cooling rate alone. The morphology of alpha-Mg is controlled by the number of nucleation events and the cooling rate. (C) 2009 Elsevier B.V. All rights reserved.
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页码：L64 / L68
页数：5
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