Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 510, Issue 1, Pages 107-113Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2011.07.110
Keywords
MD simulations; Zr-Cu-Al metallic glasses; Common neighbor analysis; Atomic-level structure
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In this work, we employed classical molecular dynamics simulations to study ZrxCu90-xAl10 metallic glasses with a wide metallic compositions ranging from 20% to 70%. Radial distribution functions were used to determine interactions between like and unlike bonds and the corresponding interatomic distances. The results showed evidence of short-range order (SRO) in Cu-Al and Al-Zr pairs. The average interatomic distance of the Cu-Al bond was observed to be shortened by 6% in all the systems studied. Analysis of coordination numbers (CNs) indicated that the total CN is nearly invariant in these systems. Finally, common neighbor analysis was conducted to determine icosahedral ordering. The result revealed that the addition of a low Al concentration to Zr-Cu alloys exhibits more prominent icosahedral ordering, except at the Zr-rich end. (C) 2011 Elsevier B.V. All rights reserved.
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