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Mechanical Properties of Glassy Nanopillars: A Comparative, Computational Study of Size Effects in Nanoglasses and Homogeneous Bulk Glasses

Adjaoud, Omar ; Albe, Karsten (2021):
Mechanical Properties of Glassy Nanopillars: A Comparative, Computational Study of Size Effects in Nanoglasses and Homogeneous Bulk Glasses. (Publisher's Version)
In: Frontiers in Materials, 7, Frontiers, e-ISSN 2296-8016,
DOI: 10.26083/tuprints-00019291,
[Article]

Abstract

We study the mechanical properties of nanoglass (NG) nanopillars with diameters ranging from 4.5 to 54 nm by means of molecular dynamic simulations and compare the results with those obtained for nanopillars prepared from homogeneous glasses. NG nanopillars of two different types of glasses, namely, Cu64Zr36 and Pd80Si20, were cut from samples prepared by nanoparticle consolidation. The influence of nanopillar diameter on the deformation behavior and strain localization is investigated. Moreover, cyclic loading is used to explore the origin of stress overshoots in the stress–strain curves of NGs. Finally, from the calculated properties, a deformation map for NG and homogeneous glass nanopillars is derived.

Item Type: Article
Erschienen: 2021
Creators: Adjaoud, Omar ; Albe, Karsten
Origin: Secondary publication via sponsored Golden Open Access
Status: Publisher's Version
Title: Mechanical Properties of Glassy Nanopillars: A Comparative, Computational Study of Size Effects in Nanoglasses and Homogeneous Bulk Glasses
Language: English
Abstract:

We study the mechanical properties of nanoglass (NG) nanopillars with diameters ranging from 4.5 to 54 nm by means of molecular dynamic simulations and compare the results with those obtained for nanopillars prepared from homogeneous glasses. NG nanopillars of two different types of glasses, namely, Cu64Zr36 and Pd80Si20, were cut from samples prepared by nanoparticle consolidation. The influence of nanopillar diameter on the deformation behavior and strain localization is investigated. Moreover, cyclic loading is used to explore the origin of stress overshoots in the stress–strain curves of NGs. Finally, from the calculated properties, a deformation map for NG and homogeneous glass nanopillars is derived.

Journal or Publication Title: Frontiers in Materials
Journal volume: 7
Publisher: Frontiers
Collation: 10 Seiten
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: 13 Aug 2021 13:00
DOI: 10.26083/tuprints-00019291
Official URL: https://tuprints.ulb.tu-darmstadt.de/19291
URN: urn:nbn:de:tuda-tuprints-192912
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