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Thermal versus deformation-induced relaxation in a glass-forming fluid

Thermal versus deformation-induced relaxation in a glass-forming fluid
Thermal versus deformation-induced relaxation in a glass-forming fluid
Plastic yielding in glassy solids has been interpreted as a strain-biased relaxation process, or, equivalently, as a strain-induced glass transition. The similarity between the structural relaxation induced by plastic deformation and thermal equilibrium of glasses has led to the formulation of the strain-temperature superposition principle. In the present work, the atomic motions caused by athermal plastic deformation of a binary Lennard-Jones glass are compared to thermal motion in the liquid in terms of the self part of the intermediate structure factor. A new approach is presented that allows to study the interplay of deformation-induced and thermal relaxation. It is found that these two processes occur independently of each other over a wide range of strain rates
0021-9606
8373
Nandagopal, Magesh
a08fa4a0-1288-413d-95a2-82eca7d1d8f8
Utz, Marcel
c84ed64c-9e89-4051-af39-d401e423891b
Nandagopal, Magesh
a08fa4a0-1288-413d-95a2-82eca7d1d8f8
Utz, Marcel
c84ed64c-9e89-4051-af39-d401e423891b

Nandagopal, Magesh and Utz, Marcel (2003) Thermal versus deformation-induced relaxation in a glass-forming fluid. The Journal of Chemical Physics, 118 (18), 8373. (doi:10.1063/1.1564056).

Record type: Article

Abstract

Plastic yielding in glassy solids has been interpreted as a strain-biased relaxation process, or, equivalently, as a strain-induced glass transition. The similarity between the structural relaxation induced by plastic deformation and thermal equilibrium of glasses has led to the formulation of the strain-temperature superposition principle. In the present work, the atomic motions caused by athermal plastic deformation of a binary Lennard-Jones glass are compared to thermal motion in the liquid in terms of the self part of the intermediate structure factor. A new approach is presented that allows to study the interplay of deformation-induced and thermal relaxation. It is found that these two processes occur independently of each other over a wide range of strain rates

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More information

Published date: 23 April 2003
Organisations: Chemistry, Faculty of Natural and Environmental Sciences, Magnetic Resonance

Identifiers

Local EPrints ID: 355574
URI: https://eprints.soton.ac.uk/id/eprint/355574
ISSN: 0021-9606
PURE UUID: 2753468e-56c6-44b9-83c7-f6143ec877ad
ORCID for Marcel Utz: ORCID iD orcid.org/0000-0003-2274-9672

Catalogue record

Date deposited: 18 Nov 2013 14:28
Last modified: 19 Jul 2019 00:41

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