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Deformation behavior of bulk and nanostructured metallic glasses studied via molecular dynamics simulations

Sopu, D. ; Ritter, Y. ; Gleiter, H. ; Albe, K. (2011)
Deformation behavior of bulk and nanostructured metallic glasses studied via molecular dynamics simulations.
In: Phys. Rev. B, 83 (10)
doi: 10.1103/PhysRevB.83.
Article, Bibliographie

Abstract

In this study, we characterize the mechanical properties of Cu64Zr36 nanoglasses under tensile load by means of large-scale molecular dynamics simulations and compare the deformation behavior to the case of a homogeneous bulk glass. The simulations reveal that interfaces act as precursors for the formation of multiple shear bands. In contrast, a bulk metallic glass under uniaxial tension shows inhomogeneous plastic flow confined in one dominant shear band. The results suggest that controlling the microstructure of a nanoglass can pave the way for tuning the mechanical properties of glassy materials.

Item Type: Article
Erschienen: 2011
Creators: Sopu, D. ; Ritter, Y. ; Gleiter, H. ; Albe, K.
Type of entry: Bibliographie
Title: Deformation behavior of bulk and nanostructured metallic glasses studied via molecular dynamics simulations
Language: English
Date: 23 March 2011
Publisher: American Physical Society
Journal or Publication Title: Phys. Rev. B
Volume of the journal: 83
Issue Number: 10
DOI: 10.1103/PhysRevB.83.
URL / URN: http://prb.aps.org/abstract/PRB/v83/i10/e100202
Abstract:

In this study, we characterize the mechanical properties of Cu64Zr36 nanoglasses under tensile load by means of large-scale molecular dynamics simulations and compare the deformation behavior to the case of a homogeneous bulk glass. The simulations reveal that interfaces act as precursors for the formation of multiple shear bands. In contrast, a bulk metallic glass under uniaxial tension shows inhomogeneous plastic flow confined in one dominant shear band. The results suggest that controlling the microstructure of a nanoglass can pave the way for tuning the mechanical properties of glassy materials.

Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Materials Modelling
Date Deposited: 22 Feb 2012 16:16
Last Modified: 20 Sep 2018 12:38
PPN:
Funders: The authors acknowledge the financial support of the Deutsche Forschungsgemeinschaft (DFG) through Project No. Al-578-6., One of us (H.G.) was supported by Karlsruhe Institute of Technology (KIT) through a grant within the NES program., A DAAD-PPP travel grant is also acknowledged. Computing time was made available at HHLR Frankfurt and Darmstadt as well as by CSC Julich.
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