Téléchargements (Bridgmanite, MgO)
Bridgmanite
Here we consider deformation of bridgmanite by dislocation glide along two slip systems: [100] glide in (010) and [010] glide in (100)
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| [100](010) | [010](100) |
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The following data are from the PhD thesis of Antoine Kraych. They have been published in:
A. Kraych, Ph. Carrez & P. Cordier (2016) On dislocation glide in MgSiO3 bridgmanite, Earth and Planetary Science Letters, 452, 60-68, doi: 10.1016/j.epsl.2016.07.035 :
Please cite these references if you use the data
Mechanical data based on a dislocation density ρ=1013 m-2 are more adapted to describe experiments under laboratory condtions (high stresses, laboratory strain rates) than those based on a dislocation density ρ=108 m-2 (see below).
Dislocation glide in Bridgmanite - Critical resolved shear stresses based on a dislocation density ρ=1013 m-2
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30 GPa
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dε/dt = 10-4 s-1 |
dε/dt = 10-5 s-1 |
dε/dt = 10-6 s-1 |
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| Data 100 - Data 010 | Data 100 - Data 010 | Data 100 - Data 010 |
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60 GPa
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dε/dt = 10-4 s-1 |
dε/dt = 10-5 s-1 |
dε/dt = 10-6 s-1 |
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| Data 100 - Data 010 | Data 100 - Data 010 | Data 100 - Data 010 |
Dislocation glide in Bridgmanite - Critical resolved shear stresses based on a dislocation density ρ=108 m-2
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30 GPa
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dε/dt = 10-14 s-1 |
dε/dt = 10-15 s-1 |
dε/dt = 10-16 s-1 |
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| Data 100 - Data 010 | Data 100 - Data 010 | Data 100 - Data 010 |
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60 GPa
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dε/dt = 10-14 s-1 |
dε/dt = 10-15 s-1 |
dε/dt = 10-16 s-1 |
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| Data 100 - Data 010 | Data 100 - Data 010 | Data 100 - Data 010 |
MgO
MgO deforms along the 1/2<110> directions is several families of planes. Among them, the basal (100) and diagonal (110) planes are the easiest for plastic glide.
In the following, "100" and "110" will refer to these planes.
Dislocation glide in MgO - Critical resolved shear stresses at dε/dt = 10-4 s-1 (dislocation density ρ=1012 m-2)
The following data are from the PhD thesis of Jonathan Amodeo. They have been published in:
J. Amodeo, Ph. Carrez, & P. Cordier (2012) Modeling the effect of pressure on the critical shear stress of MgO single crystals. Philosophical Magazine, 92(12), 1523-1541. Doi:10.1080/14786435.2011.652689
Please cite this reference if you use the data
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300 K
Dislocation glide in MgO - Critical resolved shear stresses based on a dislocation density ρ=1012 m-2
The following data are from the PhD thesis of Jonathan Amodeo. They have been published in:
J. Amodeo, Ph. Carrez, B. Devincre & P. Cordier (2011) Multiscale modelling of MgO plasticity. Acta Materialia, 59, 2291-2301 [doi:10.1016/j.actamat.2010.12.020]
and
P. Cordier, J. Amodeo & Ph. Carrez (2012) Modelling the rheology of MgO under Earth’s mantle pressure, temperature and strain-rates. Nature 481, 177-180 [doi: 10.1038/nature10687]
Please cite these references if you use the data
Mechanical data based on a dislocation density ρ=1012 m-2 are more adapted to describe experiments under laboratory condtions (high stresses, laboratory strain rates) than those based on a dislocation density ρ=108 m-2 (see below).
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0 GPa
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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30 GPa
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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60 GPa
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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100 GPa
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
Dislocation glide in MgO - Critical resolved shear stresses based on a dislocation density ρ=108 m-2
The following data are from the PhD thesis of Jonathan Amodeo. They have been published in:
J. Amodeo, Ph. Carrez, B. Devincre & P. Cordier (2011) Multiscale modelling of MgO plasticity. Acta Materialia, 59, 2291-2301 [doi:10.1016/j.actamat.2010.12.020]
and
P. Cordier, J. Amodeo & Ph. Carrez (2012) Modelling the rheology of MgO under Earth’s mantle pressure, temperature and strain-rates. Nature 481, 177-180 [doi: 10.1038/nature10687]
Please cite these references if you use the data
Mechanical data based on a dislocation density ρ=108 m-2 are more adapted to describe natural condtions (low stresses, very low strain rates).
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0 GPa
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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30 GPa
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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60 GPa
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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100 GPa
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |
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| Data 100 - Data 110 | Data 100 - Data 110 | Data 100 - Data 110 |