Effect of Si content on the size of Fe-rich intermetallic particles in Al-xSi-0.8Fe alloys

Sivarupan, Tharmalingam, Caceres, Carlos H. and Taylor, John Andrew (2013) Effect of Si content on the size of Fe-rich intermetallic particles in Al-xSi-0.8Fe alloys. Materials Science Forum, 765 107-111. doi:10.4028/www.scientific.net/MSF.765.107

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Author Sivarupan, Tharmalingam
Caceres, Carlos H.
Taylor, John Andrew
Title Effect of Si content on the size of Fe-rich intermetallic particles in Al-xSi-0.8Fe alloys
Journal name Materials Science Forum   Check publisher's open access policy
ISSN 0255-5476
ISBN 9783037857663
Publication date 2013-07-13
Sub-type Fully published paper
DOI 10.4028/www.scientific.net/MSF.765.107
Volume 765
Start page 107
End page 111
Total pages 5
Editor Ian Stone
Brian McKay
Zhongyun Fan
Place of publication Durnten-Zurich, Switzerland
Publisher Trans Tech Publications
Language eng
Abstract Al-Si-Fe plates with Si contents of 4.5, 9 and 11 mass %, unmodified and Sr-modified, were quasi-directionally solidified in sand moulds with chills at one end. The size and nature of the Fe-rich intermetallics were determined along the plates. Two forms of the intermetallic were observed, α-Al8FeSi and β-Al5FeSi, in proportions and scale dependent on the cooling rate and the Si concentration. The size of the β-phase increased with the concentration of Si at low cooling rates. At high cooling rates the tendency to form α-Al8FeSi phase increased with increasing Si content reducing the size of the β-plates. Modification generally increased the size of the pre-eutectically formed plates while reducing the post eutectically formed ones.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Fully published paper
Collections: School of Mechanical & Mining Engineering Publications
Official 2014 Collection
 
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Created: Wed, 14 Aug 2013, 01:38:22 EST by Deanna Mahony on behalf of School of Mechanical and Mining Engineering