Modeling the creep properties of olivine ...
Document type :
Article dans une revue scientifique: Article original
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Title :
Modeling the creep properties of olivine by 2.5-dimensional dislocation dynamics simulations
Author(s) :
Boioli, Francesca [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Carrez, Philippe [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Cordier, Patrick [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Devincre, Benoit [Auteur]
Laboratoire d'étude des microstructures [Châtillon] [LEM - ONERA - CNRS]
Marquille, Matthieu [Auteur]
Université de Lille
Unité Matériaux et Transformations - UMR 8207 [UMET]
Carrez, Philippe [Auteur]

Unité Matériaux et Transformations - UMR 8207 [UMET]
Cordier, Patrick [Auteur]

Unité Matériaux et Transformations - UMR 8207 [UMET]
Devincre, Benoit [Auteur]
Laboratoire d'étude des microstructures [Châtillon] [LEM - ONERA - CNRS]
Marquille, Matthieu [Auteur]
Université de Lille
Journal title :
Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Volume number :
92
Pages :
14115
Publication date :
2015
ISSN :
1098-0121
HAL domain(s) :
Planète et Univers [physics]/Sciences de la Terre
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
English abstract : [en]
In this work we performed 2.5-dimensional (2.5D) dislocation dynamics simulations coupling climb with the glide dislocation motion to model the creep behavior of olivine, one of the main component of the Earth's upper ...
Show more >In this work we performed 2.5-dimensional (2.5D) dislocation dynamics simulations coupling climb with the glide dislocation motion to model the creep behavior of olivine, one of the main component of the Earth's upper mantle. In particular, we present an application of this method to determine the creep strain rate in a material with high lattice resistance, such as olivine. We show that by including the climb mechanism we reach steady state creep conditions. Moreover, we find that a creep power law with a stress exponent close to 3 can be extracted from our simulations and we provide a model based on Orowan's law to predict the creep strain rates in the high temperature and low stress regime. The model presented is relevant to describe the plastic flow of olivine in the Earth's mantle deformation conditions and can be useful to derive the high temperature creep behavior of other materials.Show less >
Show more >In this work we performed 2.5-dimensional (2.5D) dislocation dynamics simulations coupling climb with the glide dislocation motion to model the creep behavior of olivine, one of the main component of the Earth's upper mantle. In particular, we present an application of this method to determine the creep strain rate in a material with high lattice resistance, such as olivine. We show that by including the climb mechanism we reach steady state creep conditions. Moreover, we find that a creep power law with a stress exponent close to 3 can be extracted from our simulations and we provide a model based on Orowan's law to predict the creep strain rates in the high temperature and low stress regime. The model presented is relevant to describe the plastic flow of olivine in the Earth's mantle deformation conditions and can be useful to derive the high temperature creep behavior of other materials.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
Université de Lille
ENSCL
CNRS
INRA
ENSCL
CNRS
INRA
Collections :
Research team(s) :
Plasticité
Submission date :
2019-05-16T16:45:41Z
2021-10-21T12:58:20Z
2021-10-21T12:58:20Z
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