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Applied Physics Letters / Volume 97 / Issue 9 / STRUCTURAL, MECHANICAL, THERMODYNAMIC, AND OPTICAL PROPERTIES OF CONDENSED MATTER

Appl. Phys. Lett. 97, 091901 (2010); http://dx.doi.org/10.1063/1.3485117 (3 pages)

Structural origin of the high glass-forming ability in Gd doped bulk metallic glasses

Liang Yang and Gu-Qing Guo

College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, People’s Republic of China

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(Received 18 June 2010; accepted 12 August 2010; published online 30 August 2010)

The structural origin of the high glass-forming ability (GFA) in Gd-doped CuZrAl bulk metallic glasses was investigated via synchrotron radiation techniques combined with simulations. It is found that 2 at. % Gd addition increases and stabilizes the solute-centered clusters, which leads to the relatively high atomic- and cluster-level packing efficiency and GFA in Cu46Zr45Al7Gd2 alloy. However, the presence of Al–Gd solute-solute bonding in Cu46Zr42Al7Gd5 decreases the packing efficiency, deteriorating the GFA of this alloy. These findings may extend our understanding on the sensitive dependence of GFA on the concentration of doping atoms in a number of multicomponent bulk metallic glasses.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

aluminium alloys, copper alloys, gadolinium, glass structure, metallic glasses, synchrotron radiation, zirconium alloys

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3485117

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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