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Metals 2016, 6(4), 67; doi:10.3390/met6040067

Structural Origin of the Enhanced Glass-Forming Ability Induced by Microalloying Y in the ZrCuAl Alloy

College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
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Academic Editor: Ana Sofia Ramos
Received: 16 January 2016 / Revised: 16 March 2016 / Accepted: 17 March 2016 / Published: 23 March 2016
(This article belongs to the Special Issue Intermetallics 2016)
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Abstract

In this work, the structural origin of the enhanced glass-forming ability induced by microalloying Y in a ZrCuAl multicomponent system is studied by performing synchrotron radiation experiments combined with simulations. It is revealed that the addition of Y leads to the optimization of local structures, including: (1) more Zr-centered and Y-centered icosahedral-like clusters occur in the microstructure; (2) the atomic packing efficiency inside clusters and the regularity of clusters are both enhanced. These structural optimizations help to stabilize the amorphous structure in the ZrCuAlY system, and lead to a high glass-forming ability (GFA). The present work provides an understanding of GFAs in multicomponent alloys and will shed light on the development of more metallic glasses with high GFAs. View Full-Text
Keywords: metallic glasses; microalloying; glass-forming ability; synchrotron radiation; microstructure; reverse Monte-Carlo simulation metallic glasses; microalloying; glass-forming ability; synchrotron radiation; microstructure; reverse Monte-Carlo simulation
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Guo, G.-Q.; Wu, S.-Y.; Yang, L. Structural Origin of the Enhanced Glass-Forming Ability Induced by Microalloying Y in the ZrCuAl Alloy. Metals 2016, 6, 67.

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