Atomistic mechanisms of cyclic hardening in metallic glass
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Schuh_Atomistic mechanisms.pdf
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1.17 MB
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Author(s)
Deng, Chuang
Schuh, Christopher A.
Date Issued
June 2012
Journal
Applied Physics Letters
Publisher
American Institute of Physics (AIP)
Citation
Deng, Chuang, and Christopher A. Schuh. “Atomistic mechanisms of cyclic hardening in metallic glass.” Applied Physics Letters 100, no. 25 (2012): 251909. © 2012 American Institute of Physics
Version
Final published version
Abstract
Molecular dynamics with an embedded-atom method potential is used to simulate the nanoindentation of Cu[subscript 63.5]Zr[subscript 36.5] metallic glasses. In particular, the effects of cyclic loading within the nominal elastic range on the overall strength and plasticity of metallic glass are studied. The simulated results are in line with the characteristics of experimentally observed hardening effects. In addition, analysis based on local von Mises strain suggests that the hardening is induced by confined microplasticity and stiffening in regions of the originally preferred yielding path, requiring a higher applied load to trigger a secondary one.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1063/1.4729941
