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Effect of ion irradiation on structural properties of Cu64Zr36 metallic glass

Avchaciov, K. A. and Ritter, Y. and Djurabekova, F. and Nordlund, K. and 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, Elsevier Science Publishing, pp. 22-26, 341, ISSN 0168583X,
[Online-Edition: http://dx.doi.org/10.1016/j.nimb.2014.06.036],
[Article]

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. and Ritter, Y. and Djurabekova, F. and Nordlund, K. and Albe, K.
Title: Effect of ion irradiation on structural properties of Cu64Zr36 metallic glass
Language: English
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.

Journal or Publication Title: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Volume: 341
Publisher: Elsevier Science Publishing
Uncontrolled Keywords: Metallic glasses, Ion irradiation, Molecular dynamics, Mechanical properties
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
Official URL: http://dx.doi.org/10.1016/j.nimb.2014.06.036
Additional Information:

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

Identification Number: doi:10.1016/j.nimb.2014.06.036
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