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Metallurgical and Materials Transactions A
Published in: Metallurgical and Materials Transactions A 4/2008

01-04-2008

Heat-Transfer Coefficient and In-Cavity Pressure at the Casting-Die Interface during High-Pressure Die Casting of the Magnesium Alloy AZ91D

Authors: A. Hamasaiid, G. Dour, M.S. Dargusch, T. Loulou, C. Davidson, G. Savage

Published in: Metallurgical and Materials Transactions A | Issue 4/2008

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Abstract

The present article deals with the application of a new measurement method to determine the heat-transfer coefficient (HTC) and the heat flux density at the casting-die interface during high-pressure die casting (HPDC) and solidification of the magnesium AZ91D alloy. The main measurements during the trial included velocity and the position of the piston that delivers the metal into the die, the pressure in the die cavity and at the tip of the piston, the alloy surface temperature, and the die temperature at different depths from the surface of the die. The temperature data were analyzed using an inverse method to determine the HTC at the casting-die interface during solidification. This article examines in detail the influence of the piston velocity and in-cavity pressure on heat transfer at the casting-die interface during casting and solidification of the magnesium AZ91D alloy.
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Footnotes
1
The alloy surface temperature and the temperatures in the die at 20 mm from the surface are not shown in Figure 7 in order to simplify the figure and enable the different curves to be distinguished. They remain exactly as their measured values, as shown in Figure 5 and they are not involved in the inverse calculation.
 
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Metadata
Title
Heat-Transfer Coefficient and In-Cavity Pressure at the Casting-Die Interface during High-Pressure Die Casting of the Magnesium Alloy AZ91D
Authors
A. Hamasaiid
G. Dour
M.S. Dargusch
T. Loulou
C. Davidson
G. Savage
Publication date
01-04-2008
Publisher
Springer US
Published in
Metallurgical and Materials Transactions A / Issue 4/2008
Print ISSN: 1073-5623
Electronic ISSN: 1543-1940
DOI
https://doi.org/10.1007/s11661-007-9452-7

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