Atomistic Origin of Rate-Dependent Serrated Plastic Flow in Metallic Glasses

Atomistic Origin of Rate-Dependent Serrated Plastic Flow in Metallic Glasses

<p>Abstract</p> <p>Nanoindentation simulations on a binary metallic glass were performed under various strain rates by using molecular dynamics. The rate-dependent serrated plastic flow was clearly observed, and the spatiotemporal behavior of its underlying irreversible atomic rear...

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Main Authors: Yao YG, Jiang SY, Jiang MQ, Dai LH
Format: Article
Language:English
Published: SpringerOpen 2008-01-01
Series:Nanoscale Research Letters
Subjects:
Metallic glasses
Serrated plastic flow
Strain rate
Molecular dynamics
Online Access:http://dx.doi.org/10.1007/s11671-008-9192-7
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spelling doaj-25c399a6e0114f40b9f21fe763211e092020-11-24T21:27:07ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2008-01-01312524529Atomistic Origin of Rate-Dependent Serrated Plastic Flow in Metallic GlassesYao YGJiang SYJiang MQDai LH<p>Abstract</p> <p>Nanoindentation simulations on a binary metallic glass were performed under various strain rates by using molecular dynamics. The rate-dependent serrated plastic flow was clearly observed, and the spatiotemporal behavior of its underlying irreversible atomic rearrangement was probed. Our findings clearly validate that the serration is a temporally inhomogeneous characteristic of such rearrangements and not directly dependent on the resultant shear-banding spatiality. The unique spatiotemporal distribution of shear banding during nanoindentation is highlighted in terms of the potential energy landscape (PEL) theory.</p> http://dx.doi.org/10.1007/s11671-008-9192-7Metallic glassesSerrated plastic flowStrain rateMolecular dynamics
collection DOAJ
language English
format Article
sources DOAJ
author Yao YG
Jiang SY
Jiang MQ
Dai LH
spellingShingle Yao YG
Jiang SY
Jiang MQ
Dai LH
Atomistic Origin of Rate-Dependent Serrated Plastic Flow in Metallic Glasses
Nanoscale Research Letters
Metallic glasses
Serrated plastic flow
Strain rate
Molecular dynamics
author_facet Yao YG
Jiang SY
Jiang MQ
Dai LH
author_sort Yao YG
title Atomistic Origin of Rate-Dependent Serrated Plastic Flow in Metallic Glasses
title_short Atomistic Origin of Rate-Dependent Serrated Plastic Flow in Metallic Glasses
title_full Atomistic Origin of Rate-Dependent Serrated Plastic Flow in Metallic Glasses
title_fullStr Atomistic Origin of Rate-Dependent Serrated Plastic Flow in Metallic Glasses
title_full_unstemmed Atomistic Origin of Rate-Dependent Serrated Plastic Flow in Metallic Glasses
title_sort atomistic origin of rate-dependent serrated plastic flow in metallic glasses
publisher SpringerOpen
series Nanoscale Research Letters
issn 1931-7573
1556-276X
publishDate 2008-01-01
description <p>Abstract</p> <p>Nanoindentation simulations on a binary metallic glass were performed under various strain rates by using molecular dynamics. The rate-dependent serrated plastic flow was clearly observed, and the spatiotemporal behavior of its underlying irreversible atomic rearrangement was probed. Our findings clearly validate that the serration is a temporally inhomogeneous characteristic of such rearrangements and not directly dependent on the resultant shear-banding spatiality. The unique spatiotemporal distribution of shear banding during nanoindentation is highlighted in terms of the potential energy landscape (PEL) theory.</p>
topic Metallic glasses
Serrated plastic flow
Strain rate
Molecular dynamics
url http://dx.doi.org/10.1007/s11671-008-9192-7
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AT jiangmq atomisticoriginofratedependentserratedplasticflowinmetallicglasses
AT dailh atomisticoriginofratedependentserratedplasticflowinmetallicglasses
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