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Design of new MG-based glass forming compositions using liquidus temperaure calculations correlated with an elastic strain model

Gittins, Adam (2011)
M.Res. thesis, University of Birmingham.

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Abstract

New Mg-based glass-forming compositions have been designed based upon the convergence of two existing predictive models; (1) a liquidus model developed by Cheney and Vecchio, and (2) an elastic strain model proposed by Miracle and Senkov. According to these models, alloys compositionally located near a deep eutectic, while simultaneously containing a topology that induces significant elastic strain in a developing crystalline lattice, exhibit experimentally good glass-forming ability. In light of this, the Mg-Cu-Y (MCY), Mg-Cu-Zn (MCZ) and Mg-Zn-Sm (MZS) systems were investigated as it appeared that these systems have optimised values for both liquidus profiles and elastic strains across broad compositional ranges. Three additional mathematical criteria used to evaluate other factors thought to influence glass-forming ability including concentration dependence, reduced melting temperature, and the electronegativity difference for these systems have also been examined.

Type of Work:M.Res. thesis.
Supervisor(s):Chang, Issac T. H.
School/Faculty:Colleges (2008 onwards) > College of Engineering & Physical Sciences
Department:School of Metallurgy and Materials
Subjects:TN Mining engineering. Metallurgy
Institution:University of Birmingham
ID Code:2803
This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder.
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