Characterization of Magnesium Automotive Components Produced by Super-Vacuum Die Casting Process

Abstract:

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Magnesium automotive components are currently produced by high pressure die casting. These castings cannot be heat-treated to improve the strength and ductility mainly due to the casting imperfections such as porosity and inclusions created by the air entrainment during the turbulent mold filing. These imperfections also prevent magnesium components to be used for highly stressed body components. Efforts were made to produce high integrity magnesium castings through a Super-Vacuum Die Casting process. The AZ91D castings were found to have very low porosity and can be heat-treated without blisters. The tensile properties of the castings were satisfactory. The mechanical properties and thermal analysis indicate that the conventional heat treatment procedure needs to be optimized for such thin sectioned and rapidly solidified castings which have very fine microstructures.

Info:

Periodical:

Materials Science Forum (Volumes 618-619)

Edited by:

M.S. Dargusch & S.M. Keay

Pages:

381-386

DOI:

10.4028/www.scientific.net/MSF.618-619.381

Citation:

K. Sadayappan et al., "Characterization of Magnesium Automotive Components Produced by Super-Vacuum Die Casting Process", Materials Science Forum, Vols. 618-619, pp. 381-386, 2009

Online since:

April 2009

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Price:

$35.00

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