Section thickness and the skin effect in high pressure die cast Mg-Al Alloys

Yang, K., Nagasekhar, A. V. and Caceres, C. H. (2010). Section thickness and the skin effect in high pressure die cast Mg-Al Alloys. In: Sean R. Agnew, Neale R. Neelameggham, Eric A. Nyberg and Wim H. Sillekens, Magnesium Technology 2010. TMS 2010, Seattle, Washington, U.S.A., (391-394). 24-18 February 2010.

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Name Description MIMEType Size Downloads
Author Yang, K.
Nagasekhar, A. V.
Caceres, C. H.
Title of paper Section thickness and the skin effect in high pressure die cast Mg-Al Alloys
Conference name TMS 2010
Conference location Seattle, Washington, U.S.A.
Conference dates 24-18 February 2010
Proceedings title Magnesium Technology 2010
Place of Publication Warrendale, PA, USA
Publisher The Minerals, Metals & Materials Society (TMS)
Publication Year 2010
Sub-type Fully published paper
ISBN 978-0-87339-746-9
Editor Sean R. Agnew
Neale R. Neelameggham
Eric A. Nyberg
Wim H. Sillekens
Start page 391
End page 394
Total pages 4
Language eng
Abstract/Summary Microhardness cross sectional maps of cast-to-shape tensile specimens of thickness 1 and 5 mm have been determined for a Mg-I2%AI binary alloy. For the 5 nun thick specimen the hardness was generally higher near the surface and at the comers of the cross-section in comparison with that at the centre. This difference was accounted for by the coarser solidification microstructure and the concentration of porosity at the casting's core. In contrast, no large differences in hardness were found across the section for the I mm thick specimen. The mapping showed a more or less well defined harder surface layer, albeit discontinuous and asymmetrical, for the 5 mm specimen but little differentiation of the skin for the I mm specimen. For both specimens the hardness appeared patchy and non unifonn over the entire cross section. These features of the microhardness maps are largely explained by the non unifonnity of the grain microstructure.
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Conference Paper
Collection: School of Mechanical & Mining Engineering Publications
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Created: Fri, 25 Mar 2011, 15:58:06 EST by Sally Beard on behalf of School of Mechanical and Mining Engineering