Ultimate mechanical properties of enstatite

Gouriet, Karine; Roussel, Pascal; Carrez, Philippe; Cordier, Patrick

Document type :

Article dans une revue scientifique: Article original

DOI :

10.1007/s00269-022-01206-5

Permalink :

http://hdl.handle.net/20.500.12210/77346

Title :

Ultimate mechanical properties of enstatite

Author(s) :

Gouriet, Karine [Auteur]

Unité Matériaux et Transformations (UMET) - UMR 8207
Roussel, Pascal [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Carrez, Philippe [Auteur]

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

Unité Matériaux et Transformations (UMET) - UMR 8207

Journal title :

Physics and chemistry of minerals

Abbreviated title :

Phys Chem Minerals

Volume number :

Publisher :

Springer Science and Business Media LLC

Publication date :

2022-07-11

ISSN :

1432-2021

English keyword(s) :

Orthoenstatite
Ultimate mechanical properties
Ideal tensile strength
Ideal shear strength

HAL domain(s) :

Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]

English abstract : [en]

The ultimate mechanical properties of MgSiO3 orthoenstatite (OEN), as characterized here by the ideal strengths, have been calculated under tensile and shear loadings using first-principles calculations. Both ideal tensile ...
Show more >The ultimate mechanical properties of MgSiO3 orthoenstatite (OEN), as characterized here by the ideal strengths, have been calculated under tensile and shear loadings using first-principles calculations. Both ideal tensile strength (ITS) and shear strength (ISS) are computed by applying homogeneous strain increments along high-symmetry directions ([100], [010], and [001]) and low index shear planes ((100), (010), and (001)) of the orthorhombic lattice. We show that the ultimate mechanical properties of OEN are highly anisotropic during tensile loading, with ITS ranging from 4.5 GPa along [001] to 8.7 GPa along [100], and quite isotropic during the shear loading with ISS ranging from 7.4 to 8.9 GPa. During tensile test along [100] and [001], a modified structure close to OEN has been found. This modified structure is more stable than OEN under stress (or strain). We have characterized its elastic and ultimate properties under tensile loading. With ITS ranging from 7.6 GPa along [010] to 25.6 GPa along [001], this modified structure appears to be very anisotropic with exceptional strength along [001].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 :

Research team(s) :

Plasticité

Submission date :

2022-10-07T13:05:23Z
2022-10-12T09:04:55Z

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Except where otherwise noted, this item's license is described as Attribution 3.0 United States

Version	Link	Modification date
3	20.500.12210/77346*	2022-10-12T08:53:01Z
1	20.500.12210/77346.1	2022-10-07T13:05:23Z

Ultimate mechanical properties of enstatite

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Ultimate mechanical properties of enstatite

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