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Reinforcement of nanoglasses by interface strengthening

Kalcher, Constanze and Adjaoud, Omar and Rohrer, Jochen and Stukowski, Alexander and Albe, Karsten (2017):
Reinforcement of nanoglasses by interface strengthening.
In: Scripta Materialia, pp. 115-119, 141, ISSN 13596462, [Online-Edition: https://doi.org/10.1016/j.scriptamat.2017.08.004],
[Article]

Abstract

Nanoglasses consist of glassy grains connected by an amorphous interface. While internal interfaces in nanoglasses help to prevent brittle failure, they are usually not beneficial to the glasses overall strength. In this molecular dynamics study, we manipulate the glass–glass interfaces of a Cu–Zr nanoglass, such that they are replaced by stronger crystalline interphases. Analogous to grain boundary strengthening in crystalline materials, we show that it is possible to reinforce the nanoglass without compromising its ductility.

Item Type: Article
Erschienen: 2017
Creators: Kalcher, Constanze and Adjaoud, Omar and Rohrer, Jochen and Stukowski, Alexander and Albe, Karsten
Title: Reinforcement of nanoglasses by interface strengthening
Language: English
Abstract:

Nanoglasses consist of glassy grains connected by an amorphous interface. While internal interfaces in nanoglasses help to prevent brittle failure, they are usually not beneficial to the glasses overall strength. In this molecular dynamics study, we manipulate the glass–glass interfaces of a Cu–Zr nanoglass, such that they are replaced by stronger crystalline interphases. Analogous to grain boundary strengthening in crystalline materials, we show that it is possible to reinforce the nanoglass without compromising its ductility.

Journal or Publication Title: Scripta Materialia
Volume: 141
Uncontrolled Keywords: Metallic glass, Grain interfaces, Tension test, Molecular dynamics, Nanoglass
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Materials Modelling
Zentrale Einrichtungen > University IT-Service and Computing Centre (HRZ) > Hochleistungsrechner
11 Department of Materials and Earth Sciences > Material Science
Zentrale Einrichtungen > University IT-Service and Computing Centre (HRZ)
11 Department of Materials and Earth Sciences
Zentrale Einrichtungen
Date Deposited: 24 Aug 2017 14:42
Official URL: https://doi.org/10.1016/j.scriptamat.2017.08.004
Identification Number: doi:10.1016/j.scriptamat.2017.08.004
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