Rheology of amorphous olivine thin films ...
Type de document :
Article dans une revue scientifique: Article original
URL permanente :
Titre :
Rheology of amorphous olivine thin films characterized by nanoindentation
Auteur(s) :
Baral, Paul [Auteur]
Orekhov, Andrey [Auteur]
Dohmen, Ralf [Auteur]
Coulombier, Michaël [Auteur]
Raskin, Jean Pierre [Auteur]
Cordier, Patrick [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Idrissi, Hosni [Auteur]
Pardoen, Thomas [Auteur]
Orekhov, Andrey [Auteur]
Dohmen, Ralf [Auteur]
Coulombier, Michaël [Auteur]
Raskin, Jean Pierre [Auteur]
Cordier, Patrick [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Idrissi, Hosni [Auteur]
Pardoen, Thomas [Auteur]
Titre de la revue :
Acta Materialia
Nom court de la revue :
Acta Materialia
Numéro :
219
Pagination :
117257
Éditeur :
Elsevier BV
Date de publication :
2021-10
ISSN :
1359-6454
Résumé en anglais : [en]
The rheological properties of amorphous olivine thin films deposited by pulsed laser deposition have been studied based on ambient temperature nanoindentation under constant strain-rate and relaxation conditions. The ...
Lire la suite >The rheological properties of amorphous olivine thin films deposited by pulsed laser deposition have been studied based on ambient temperature nanoindentation under constant strain-rate and relaxation conditions. The amorphous olivine films exhibit a viscoelastic-viscoplastic behavior with a significant rate dependency. The strain-rate sensitivity m is equal to ~0.06 which is very high for silicates, indicating a complex out-of-equilibrium structure. The minimum apparent activation volume determined from nanoindentation experiments corresponds to Mg and Fe metallic sites in the (Mg,Fe)2SiO4 crystalline lattice. The ambient temperature creep behavior of the amorphous olivine films differs very much from the one of single crystal olivine. This behavior directly connects to the recent demonstration of the activation of grain boundary sliding in polycrystalline olivine following grain boundary amorphization under high-stress.Lire moins >
Lire la suite >The rheological properties of amorphous olivine thin films deposited by pulsed laser deposition have been studied based on ambient temperature nanoindentation under constant strain-rate and relaxation conditions. The amorphous olivine films exhibit a viscoelastic-viscoplastic behavior with a significant rate dependency. The strain-rate sensitivity m is equal to ~0.06 which is very high for silicates, indicating a complex out-of-equilibrium structure. The minimum apparent activation volume determined from nanoindentation experiments corresponds to Mg and Fe metallic sites in the (Mg,Fe)2SiO4 crystalline lattice. The ambient temperature creep behavior of the amorphous olivine films differs very much from the one of single crystal olivine. This behavior directly connects to the recent demonstration of the activation of grain boundary sliding in polycrystalline olivine following grain boundary amorphization under high-stress.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Non spécifiée
Projet Européen :
Établissement(s) :
Université de Lille
CNRS
INRA
ENSCL
CNRS
INRA
ENSCL
Collections :
Équipe(s) de recherche :
Plasticité
Date de dépôt :
2021-10-25T12:59:58Z
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