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Crystallization model of magnesium primary phase in the AZ91/SiC composite

Lelito, J.; Zak, P. L.; Greer, A. L.; Suchy, J. S.; Krajewski, W. K.; Gracz, B.; Szucki, M. and Shirzadi, A. A. (2012). Crystallization model of magnesium primary phase in the AZ91/SiC composite. Composites Part B: Engineering, 43(8) pp. 3306–3309.

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Metal–matrix composites are widely applied in the aerospace and automotive industries because of their low density and high rigidity. We focus on composites of magnesium-alloy (AZ91) matrix reinforced with SiC particles, with the aim of building a micro–macro model for their solidification. Heat-flow processes are modelled on the macro-scale, with latent heat release during nucleation and grain growth. Calcula- tions are for a fixed cooling rate, consistent with the micromodel for magnesium primary phase solidifi- cation. The population density of grains in the matrix is assumed to depend on the maximum supercooling and on the mass fraction of SiC particles. The present model gives reasonable agreement with measurements.

Item Type: Journal Item
Copyright Holders: 2012 Elsevier
ISSN: 1359-8368
Keywords: Metal–matrix composites (MMCs), Particle-reinforcement, Microstructures, Computational modelling, Casting
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 35358
Depositing User: Amir Shirzadi
Date Deposited: 31 Oct 2012 09:52
Last Modified: 16 Jun 2020 14:00
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