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Journal of Spectroscopy
Volume 2014, Article ID 627679, 5 pages
http://dx.doi.org/10.1155/2014/627679
Research Article

Size Effects: The Relation to the Percentage of Atoms That Participate in the Deformation of ZrCu Metallic Glass

State Key Laboratory of Metastable Materials Science & Technology, Yanshan University, Hebei Street 438, Qinhuangdao 066004, China

Received 29 April 2014; Accepted 28 May 2014; Published 15 June 2014

Academic Editor: Xinqing Chen

Copyright © 2014 L. K. Gao et al. 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.

Abstract

Molecular dynamics simulations indicate that with the model diameter gradually decreasing the deformation mode of ZrCu metallic glass evolves from highly localized shear band formation to homogeneous deformation with obvious transition in  nm. Through the statistic of atoms that sustain shear strain larger than 8% in the models with 8% strain along -direction, we found that the main reason for the uniform deformation that occurs in the smallest size model is that there are 61% atoms involved in the deformation, which significantly decrease the strain assigned to individual atoms, avoiding large atomic rearrangement and making those atoms evenly distributed in the model matrix.