Rheology of amorphous olivine thin films ...
Document type :
Article dans une revue scientifique: Article original
Permalink :
Title :
Rheology of amorphous olivine thin films characterized by nanoindentation
Author(s) :
Baral, Paul [Auteur]
Institute of Mechanics, Materials and Civil Engineering [Louvain] [IMMC]
Orekhov, Andrey [Auteur]
Dohmen, Ralf [Auteur]
Coulombier, Michaël [Auteur]
Institute of Mechanics, Materials and Civil Engineering [Louvain] [IMMC]
Raskin, Jean Pierre [Auteur]
Institute of Information and Communication Technologies, Electronics and Applied Mathematics [ICTEAM]
Cordier, Patrick [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Idrissi, Hosni [Auteur]
Electron Microscopy for Materials Science - EMAT (Antwerp, Belgium)
Institute of Mechanics, Materials and Civil Engineering [Louvain] [IMMC]
Pardoen, Thomas [Auteur]
Institute of Mechanics, Materials and Civil Engineering [Louvain] [IMMC]
Institute of Mechanics, Materials and Civil Engineering [Louvain] [IMMC]
Orekhov, Andrey [Auteur]
Dohmen, Ralf [Auteur]
Coulombier, Michaël [Auteur]
Institute of Mechanics, Materials and Civil Engineering [Louvain] [IMMC]
Raskin, Jean Pierre [Auteur]
Institute of Information and Communication Technologies, Electronics and Applied Mathematics [ICTEAM]
Cordier, Patrick [Auteur]

Unité Matériaux et Transformations (UMET) - UMR 8207
Idrissi, Hosni [Auteur]
Electron Microscopy for Materials Science - EMAT (Antwerp, Belgium)
Institute of Mechanics, Materials and Civil Engineering [Louvain] [IMMC]
Pardoen, Thomas [Auteur]
Institute of Mechanics, Materials and Civil Engineering [Louvain] [IMMC]
Journal title :
Acta Materialia
Abbreviated title :
Acta Materialia
Volume number :
219
Pages :
117257
Publisher :
Elsevier BV
Publication date :
2021-10
ISSN :
1359-6454
HAL domain(s) :
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Planète et Univers [physics]/Sciences de la Terre
Planète et Univers [physics]/Sciences de la Terre
English abstract : [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 ...
Show more >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.Show less >
Show more >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.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
European Project :
Administrative institution(s) :
Université de Lille
CNRS
INRA
ENSCL
CNRS
INRA
ENSCL
Collections :
Research team(s) :
Plasticité
Submission date :
2021-10-25T12:59:58Z
2021-10-26T09:37:45Z
2021-10-26T09:37:45Z
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