Grain refinement of Mg-Al(-Mn) alloys by SiC additions

Easton, Mark A., Schiffl, Andreas, Yao, Ji-Yong and Kaufmann, Helmut (2006) Grain refinement of Mg-Al(-Mn) alloys by SiC additions. Scripta Materialia, 55 4: 379-382. doi:10.1016/j.scriptamat.2006.04.014

Author Easton, Mark A.
Schiffl, Andreas
Yao, Ji-Yong
Kaufmann, Helmut
Title Grain refinement of Mg-Al(-Mn) alloys by SiC additions
Journal name Scripta Materialia   Check publisher's open access policy
ISSN 1359-6462
Publication date 2006
Sub-type Article (original research)
DOI 10.1016/j.scriptamat.2006.04.014
Volume 55
Issue 4
Start page 379
End page 382
Total pages 4
Editor Horst Hahn
Place of publication United Kingdom
Publisher Pergamon
Collection year 2006
Language eng
Subject C1
291302 Physical Metallurgy
671004 Castings
Abstract The addition of SiC particles effectively grain refined a range of Mg-Al alloys. The greatest reductions in grain size were found for the alloys with lower Al contents. The presence of Mg2Si in the microstructure after that SiC addition, and consideration of phase equilibria suggested that the SiC transforms to Al4C3, and this is the actual nucleant. The addition of Mn poisoned the grain refining effect of the SiC addition, probably due to the formation of less potent Al-Mn-carbides. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Keyword Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Magnesium Alloys
Solidification Microstructure
Grain Refining
Q-Index Code C1

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Created: Wed, 15 Aug 2007, 07:57:33 EST