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Effect of ion irradiation on structural properties of Cu64Zr36 metallic glass

Avchaciov, K. A. ; Ritter, Y. ; Djurabekova, F. ; Nordlund, K. ; Albe, K. (2014)
Effect of ion irradiation on structural properties of Cu64Zr36 metallic glass.
In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 341
doi: 10.1016/j.nimb.2014.06.036
Article, Bibliographie

Abstract

By means of molecular dynamics simulations, we study the low energy ion irradiation effect on the short-range order (SRO) of metallic glass structures. Breaking the topological SRO in a controlled manner may lead to desirable modifications of deformation behavior of glass structures. These changes in SRO were also found to be stable during the thermal annealing at temperatures below the glass transition temperature (T-g). The tensile deformation simulations performed for the Cu-Zr glass nanorods show that irradiated nanorods become softer compared to the pristine ones, changing the yielding mechanism from a slip via formation of a single shear band to formation of a broad necking region.

Item Type: Article
Erschienen: 2014
Creators: Avchaciov, K. A. ; Ritter, Y. ; Djurabekova, F. ; Nordlund, K. ; Albe, K.
Type of entry: Bibliographie
Title: Effect of ion irradiation on structural properties of Cu64Zr36 metallic glass
Language: English
Date: 15 December 2014
Publisher: Elsevier Science Publishing
Journal or Publication Title: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Volume of the journal: 341
DOI: 10.1016/j.nimb.2014.06.036
Abstract:

By means of molecular dynamics simulations, we study the low energy ion irradiation effect on the short-range order (SRO) of metallic glass structures. Breaking the topological SRO in a controlled manner may lead to desirable modifications of deformation behavior of glass structures. These changes in SRO were also found to be stable during the thermal annealing at temperatures below the glass transition temperature (T-g). The tensile deformation simulations performed for the Cu-Zr glass nanorods show that irradiated nanorods become softer compared to the pristine ones, changing the yielding mechanism from a slip via formation of a single shear band to formation of a broad necking region.

Uncontrolled Keywords: Metallic glasses, Ion irradiation, Molecular dynamics, Mechanical properties
Additional Information:

Spring Meeting of the European Materials Research Society EMRS Symposium W: "Ion Beam Applications: New and Innovative Approaches"

Divisions: 11 Department of Materials and Earth Sciences > Material Science > Materials Modelling
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 02 Mar 2015 10:25
Last Modified: 02 Mar 2015 10:25
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