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Metals 2014, 4(4), 519-529; doi:10.3390/met4040519

Predicting Composition Dependence of Glass Forming Ability in Ternary Al-Cu-Y System by Thermodynamic Calculation

Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
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Received: 22 September 2014 / Revised: 14 October 2014 / Accepted: 10 November 2014 / Published: 21 November 2014
(This article belongs to the Special Issue Liquid Metals)
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Abstract

The composition dependence of glass forming ability in the ternary Al-Cu-Y system is predicted by thermodynamic calculations based on the Miedema’s model and Alonso’s method. By comparing the relative energetic status of the amorphous phase versus the solid solution phase, a hexagonal composition region that energetically favoring the metallic glass formation is predicted. The glass formation driving force and crystallization resistance are further calculated and the composition of Al72Cu10Y18 is pinpointed with the largest glass forming ability in the Al-Cu-Y system. The calculation results are well supported by the experimental observations reported in the literature. View Full-Text
Keywords: bulk metallic glasses; Al-Cu-Y system; glass formation ability; thermodynamic calculation bulk metallic glasses; Al-Cu-Y system; glass formation ability; thermodynamic calculation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Wang, Q.; Li, J.; Liu, J.; Liu, B. Predicting Composition Dependence of Glass Forming Ability in Ternary Al-Cu-Y System by Thermodynamic Calculation. Metals 2014, 4, 519-529.

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