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

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

doi:10.1063/1.4908122

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

Journal Article · Thu Feb 12 00:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4908122· OSTI ID:1326091

^[1];

^[1]; Lan, S. ^[1]; Pan, S. P. ^[2]; Lu, Z. P. ^[3]

City Univ. of Hong Kong (China)
Taiyuan Univ. of Technology (China)
Univ. of Science and Technology Beijing (China)

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. Furthermore, 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.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division

Grant/Contract Number:: AC05-00OR22725; AC02-06CH11357

OSTI ID:: 1326091

Alternate ID(s):: OSTI ID: 1226709

Journal Information:: Applied Physics Letters, Vol. 106, Issue 6; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: ENGLISH

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Cited by: 12 works

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