Propensity of bond exchange as a window into the mechanical properties of metallic glasses

W. Jiao; X. L. Wang; S. Lan; S. P. Pan; Z. P. Lu

doi:10.1063/1.4908122

Author(s)

W. Jiao
X. L. Wang
S. Lan
S. P. Pan
Z. P. Lu

Detail(s)

Original language	English
Article number	61910
Journal / Publication	Applied Physics Letters
Volume	106
Issue number	6
Publication status	Published - 9 Feb 2015

Link(s)

DOI	DOI https://doi.org/10.1063/1.4908122 Final Published version
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Attachment(s)	Documents 5917118.pdf Final Published version, 1.58 MB, PDF Publisher's Copyright Statement This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in W. Jiao, X. L. Wang, S. Lan, S. P. Pan, and Z. P. Lu , "Propensity of bond exchange as a window into the mechanical properties of metallic glasses", Appl. Phys. Lett. 106, 061910 (2015) and may be found at https://doi.org/10.1063/1.4908122.
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-84923870370&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(e5882d6d-dba0-4fc7-a66e-3ca6cfc95f37).html

Abstract

We investigated the mechanical properties of Zr-Cu-Al bulk metallic glasses, by compression experiment and molecular dynamics simulations. From the simulation, we found that the large, solvent atom, Zr, has high propensity of bond exchange compared to those of the smaller solute atoms. The difference in bond exchange is consistent with the observed disparity in mechanical behaviors: Zr-rich metallic glass exhibits low elastic modulus and large plastic strain. X-ray photoelectron spectroscopy measurements suggest that the increased propensity in bond exchange is related to the softening of Zr bonds with increasing Zr content.