Title :

Rheological properties of Mg2SiO4 glass: A molecular dynamics study

Author(s) :

Delbecq, Valentin [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Carrez, Philippe [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Cordier, Patrick [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Institut universitaire de France [IUF]

Journal title :

Journal of Non-Crystalline Solids

Volume number :

619

Pages :

122572

Publisher :

Elsevier

Publication date :

2023-08-18

ISSN :

0022-3093

English keyword(s) :

Silicate glass
Olivine
Mechanical properties

HAL domain(s) :

Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Planète et Univers [physics]/Sciences de la Terre

English abstract : [en]

We report an initial investigation of the rheology of Mg2SiO4 glass through classical molecular dynamics simulations. We performed simple shear tests at different temperatures (1–300 K), shear rates (108–1010 s–1) and ...
Show more >We report an initial investigation of the rheology of Mg2SiO4 glass through classical molecular dynamics simulations. We performed simple shear tests at different temperatures (1–300 K), shear rates (108–1010 s–1) and pressures (0–10 GPa), from which we investigate the atomic rearrangements induced by loading. At low strain, atomic rearrangements, as detected by a non-affine displacement criteria, nucleate randomly in the glass. They then give rise to the formation of shear bands once the steady state of plastic flow is reached. We show that the flow stress follows a Herschel-Buckley law modified to account for the thermal activation of plastic events.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

European Project :

Rheology of Earth materials: closing the gap between TIMEscales in the laboratory and in the MANtle

Administrative institution(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Plasticité

Submission date :

2023-08-21T14:38:59Z
2023-08-28T13:28:45Z