Modeling dislocation glide and lattice friction in [Mg.sub.2]Si[O.sub.4] wadsleyite in conditions of the earth's transition zone
Thermally activated dislocation glide in [Mg.sub.2]Si[O.sub.4] wadsleyite at 15 GPa has been modeled to investigate its potential contribution to plastic deformation of wadsleyite in the Earth's transition zone. Modeling is based on a multiphysics approach that allows calculating the constituti...
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| Autor*in: |
Ritterbex, Sebastian [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2016 |
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| Rechteinformationen: |
Nutzungsrecht: © COPYRIGHT 2016 Mineralogical Society of America |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: American mineralogist - Washington, DC [u.a.] : Soc., 1916, 101(2016), 9-10, Seite 2085 |
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| Übergeordnetes Werk: |
volume:101 ; year:2016 ; number:9-10 ; pages:2085 |
| Links: |
|---|
| DOI / URN: |
10.2l38/am-2016-5578CCBYNCND |
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| Katalog-ID: |
OLC1985314541 |
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| 245 | 1 | 0 | |a Modeling dislocation glide and lattice friction in [Mg.sub.2]Si[O.sub.4] wadsleyite in conditions of the earth's transition zone |
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| 520 | |a Thermally activated dislocation glide in [Mg.sub.2]Si[O.sub.4] wadsleyite at 15 GPa has been modeled to investigate its potential contribution to plastic deformation of wadsleyite in the Earth's transition zone. Modeling is based on a multiphysics approach that allows calculating the constitutive equations associated with single slip for a wide range of temperatures and strain rates typical for the laboratory and the Earth's mantle. The model is based on the core structures of the rate limiting 1/2 {101} and [100](010) dissociated screw dislocations. After quantifying their lattice friction, glide is modeled through an elastic interaction model that allows calculating the critical configurations that trigger elementary displacements of dissociated dislocations. The constitutive relations corresponding to glide are then deduced with Orowan's equation to describe the average intracrystalline plasticity. The high stresses predicted by the model are found to be in good agreement with experimental data on plastic deformation of wadsleyite at high-pressure conditions. Moreover, it is found that even at appropriate mantle strain rates, glide of dislocations remain difficult with critical resolved shear stress (CRSS) values typically larger than 100 MPa. This implies the inefficiency of dislocation glide to the overall plastic deformation of [Mg.sub.2]Si[O.sub.4] wadsleyite under transition zone conditions. | ||
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10.2l38/am-2016-5578CCBYNCND doi PQ20170206 (DE-627)OLC1985314541 (DE-599)GBVOLC1985314541 (PRQ)gale_infotrac_4695027740 (KEY)0120180820160000101000902085modelingdislocationglideandlatticefrictioninmgsub2 DE-627 ger DE-627 rakwb eng 550 540 DNB 38.30 bkl Ritterbex, Sebastian verfasserin aut Modeling dislocation glide and lattice friction in [Mg.sub.2]Si[O.sub.4] wadsleyite in conditions of the earth's transition zone 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Thermally activated dislocation glide in [Mg.sub.2]Si[O.sub.4] wadsleyite at 15 GPa has been modeled to investigate its potential contribution to plastic deformation of wadsleyite in the Earth's transition zone. Modeling is based on a multiphysics approach that allows calculating the constitutive equations associated with single slip for a wide range of temperatures and strain rates typical for the laboratory and the Earth's mantle. The model is based on the core structures of the rate limiting 1/2 {101} and [100](010) dissociated screw dislocations. After quantifying their lattice friction, glide is modeled through an elastic interaction model that allows calculating the critical configurations that trigger elementary displacements of dissociated dislocations. The constitutive relations corresponding to glide are then deduced with Orowan's equation to describe the average intracrystalline plasticity. The high stresses predicted by the model are found to be in good agreement with experimental data on plastic deformation of wadsleyite at high-pressure conditions. Moreover, it is found that even at appropriate mantle strain rates, glide of dislocations remain difficult with critical resolved shear stress (CRSS) values typically larger than 100 MPa. This implies the inefficiency of dislocation glide to the overall plastic deformation of [Mg.sub.2]Si[O.sub.4] wadsleyite under transition zone conditions. Nutzungsrecht: © COPYRIGHT 2016 Mineralogical Society of America Olivine Chemical properties Silicates Carrez, Philippe oth Cordier, Patrick oth Enthalten in American mineralogist Washington, DC [u.a.] : Soc., 1916 101(2016), 9-10, Seite 2085 (DE-627)129081795 (DE-600)3514-2 (DE-576)014414716 0003-004X nnns volume:101 year:2016 number:9-10 pages:2085 http://dx.doi.org/10.2l38/am-2016-5578CCBYNCND Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_21 GBV_ILN_22 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 GBV_ILN_188 GBV_ILN_2010 GBV_ILN_2015 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4323 38.30 AVZ AR 101 2016 9-10 2085 |
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10.2l38/am-2016-5578CCBYNCND doi PQ20170206 (DE-627)OLC1985314541 (DE-599)GBVOLC1985314541 (PRQ)gale_infotrac_4695027740 (KEY)0120180820160000101000902085modelingdislocationglideandlatticefrictioninmgsub2 DE-627 ger DE-627 rakwb eng 550 540 DNB 38.30 bkl Ritterbex, Sebastian verfasserin aut Modeling dislocation glide and lattice friction in [Mg.sub.2]Si[O.sub.4] wadsleyite in conditions of the earth's transition zone 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Thermally activated dislocation glide in [Mg.sub.2]Si[O.sub.4] wadsleyite at 15 GPa has been modeled to investigate its potential contribution to plastic deformation of wadsleyite in the Earth's transition zone. Modeling is based on a multiphysics approach that allows calculating the constitutive equations associated with single slip for a wide range of temperatures and strain rates typical for the laboratory and the Earth's mantle. The model is based on the core structures of the rate limiting 1/2 {101} and [100](010) dissociated screw dislocations. After quantifying their lattice friction, glide is modeled through an elastic interaction model that allows calculating the critical configurations that trigger elementary displacements of dissociated dislocations. The constitutive relations corresponding to glide are then deduced with Orowan's equation to describe the average intracrystalline plasticity. The high stresses predicted by the model are found to be in good agreement with experimental data on plastic deformation of wadsleyite at high-pressure conditions. Moreover, it is found that even at appropriate mantle strain rates, glide of dislocations remain difficult with critical resolved shear stress (CRSS) values typically larger than 100 MPa. This implies the inefficiency of dislocation glide to the overall plastic deformation of [Mg.sub.2]Si[O.sub.4] wadsleyite under transition zone conditions. Nutzungsrecht: © COPYRIGHT 2016 Mineralogical Society of America Olivine Chemical properties Silicates Carrez, Philippe oth Cordier, Patrick oth Enthalten in American mineralogist Washington, DC [u.a.] : Soc., 1916 101(2016), 9-10, Seite 2085 (DE-627)129081795 (DE-600)3514-2 (DE-576)014414716 0003-004X nnns volume:101 year:2016 number:9-10 pages:2085 http://dx.doi.org/10.2l38/am-2016-5578CCBYNCND Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_21 GBV_ILN_22 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 GBV_ILN_188 GBV_ILN_2010 GBV_ILN_2015 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4323 38.30 AVZ AR 101 2016 9-10 2085 |
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10.2l38/am-2016-5578CCBYNCND doi PQ20170206 (DE-627)OLC1985314541 (DE-599)GBVOLC1985314541 (PRQ)gale_infotrac_4695027740 (KEY)0120180820160000101000902085modelingdislocationglideandlatticefrictioninmgsub2 DE-627 ger DE-627 rakwb eng 550 540 DNB 38.30 bkl Ritterbex, Sebastian verfasserin aut Modeling dislocation glide and lattice friction in [Mg.sub.2]Si[O.sub.4] wadsleyite in conditions of the earth's transition zone 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Thermally activated dislocation glide in [Mg.sub.2]Si[O.sub.4] wadsleyite at 15 GPa has been modeled to investigate its potential contribution to plastic deformation of wadsleyite in the Earth's transition zone. Modeling is based on a multiphysics approach that allows calculating the constitutive equations associated with single slip for a wide range of temperatures and strain rates typical for the laboratory and the Earth's mantle. The model is based on the core structures of the rate limiting 1/2 {101} and [100](010) dissociated screw dislocations. After quantifying their lattice friction, glide is modeled through an elastic interaction model that allows calculating the critical configurations that trigger elementary displacements of dissociated dislocations. The constitutive relations corresponding to glide are then deduced with Orowan's equation to describe the average intracrystalline plasticity. The high stresses predicted by the model are found to be in good agreement with experimental data on plastic deformation of wadsleyite at high-pressure conditions. Moreover, it is found that even at appropriate mantle strain rates, glide of dislocations remain difficult with critical resolved shear stress (CRSS) values typically larger than 100 MPa. This implies the inefficiency of dislocation glide to the overall plastic deformation of [Mg.sub.2]Si[O.sub.4] wadsleyite under transition zone conditions. Nutzungsrecht: © COPYRIGHT 2016 Mineralogical Society of America Olivine Chemical properties Silicates Carrez, Philippe oth Cordier, Patrick oth Enthalten in American mineralogist Washington, DC [u.a.] : Soc., 1916 101(2016), 9-10, Seite 2085 (DE-627)129081795 (DE-600)3514-2 (DE-576)014414716 0003-004X nnns volume:101 year:2016 number:9-10 pages:2085 http://dx.doi.org/10.2l38/am-2016-5578CCBYNCND Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_21 GBV_ILN_22 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 GBV_ILN_188 GBV_ILN_2010 GBV_ILN_2015 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4323 38.30 AVZ AR 101 2016 9-10 2085 |
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10.2l38/am-2016-5578CCBYNCND doi PQ20170206 (DE-627)OLC1985314541 (DE-599)GBVOLC1985314541 (PRQ)gale_infotrac_4695027740 (KEY)0120180820160000101000902085modelingdislocationglideandlatticefrictioninmgsub2 DE-627 ger DE-627 rakwb eng 550 540 DNB 38.30 bkl Ritterbex, Sebastian verfasserin aut Modeling dislocation glide and lattice friction in [Mg.sub.2]Si[O.sub.4] wadsleyite in conditions of the earth's transition zone 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Thermally activated dislocation glide in [Mg.sub.2]Si[O.sub.4] wadsleyite at 15 GPa has been modeled to investigate its potential contribution to plastic deformation of wadsleyite in the Earth's transition zone. Modeling is based on a multiphysics approach that allows calculating the constitutive equations associated with single slip for a wide range of temperatures and strain rates typical for the laboratory and the Earth's mantle. The model is based on the core structures of the rate limiting 1/2 {101} and [100](010) dissociated screw dislocations. After quantifying their lattice friction, glide is modeled through an elastic interaction model that allows calculating the critical configurations that trigger elementary displacements of dissociated dislocations. The constitutive relations corresponding to glide are then deduced with Orowan's equation to describe the average intracrystalline plasticity. The high stresses predicted by the model are found to be in good agreement with experimental data on plastic deformation of wadsleyite at high-pressure conditions. Moreover, it is found that even at appropriate mantle strain rates, glide of dislocations remain difficult with critical resolved shear stress (CRSS) values typically larger than 100 MPa. This implies the inefficiency of dislocation glide to the overall plastic deformation of [Mg.sub.2]Si[O.sub.4] wadsleyite under transition zone conditions. Nutzungsrecht: © COPYRIGHT 2016 Mineralogical Society of America Olivine Chemical properties Silicates Carrez, Philippe oth Cordier, Patrick oth Enthalten in American mineralogist Washington, DC [u.a.] : Soc., 1916 101(2016), 9-10, Seite 2085 (DE-627)129081795 (DE-600)3514-2 (DE-576)014414716 0003-004X nnns volume:101 year:2016 number:9-10 pages:2085 http://dx.doi.org/10.2l38/am-2016-5578CCBYNCND Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_21 GBV_ILN_22 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 GBV_ILN_188 GBV_ILN_2010 GBV_ILN_2015 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4323 38.30 AVZ AR 101 2016 9-10 2085 |
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10.2l38/am-2016-5578CCBYNCND doi PQ20170206 (DE-627)OLC1985314541 (DE-599)GBVOLC1985314541 (PRQ)gale_infotrac_4695027740 (KEY)0120180820160000101000902085modelingdislocationglideandlatticefrictioninmgsub2 DE-627 ger DE-627 rakwb eng 550 540 DNB 38.30 bkl Ritterbex, Sebastian verfasserin aut Modeling dislocation glide and lattice friction in [Mg.sub.2]Si[O.sub.4] wadsleyite in conditions of the earth's transition zone 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Thermally activated dislocation glide in [Mg.sub.2]Si[O.sub.4] wadsleyite at 15 GPa has been modeled to investigate its potential contribution to plastic deformation of wadsleyite in the Earth's transition zone. Modeling is based on a multiphysics approach that allows calculating the constitutive equations associated with single slip for a wide range of temperatures and strain rates typical for the laboratory and the Earth's mantle. The model is based on the core structures of the rate limiting 1/2 {101} and [100](010) dissociated screw dislocations. After quantifying their lattice friction, glide is modeled through an elastic interaction model that allows calculating the critical configurations that trigger elementary displacements of dissociated dislocations. The constitutive relations corresponding to glide are then deduced with Orowan's equation to describe the average intracrystalline plasticity. The high stresses predicted by the model are found to be in good agreement with experimental data on plastic deformation of wadsleyite at high-pressure conditions. Moreover, it is found that even at appropriate mantle strain rates, glide of dislocations remain difficult with critical resolved shear stress (CRSS) values typically larger than 100 MPa. This implies the inefficiency of dislocation glide to the overall plastic deformation of [Mg.sub.2]Si[O.sub.4] wadsleyite under transition zone conditions. Nutzungsrecht: © COPYRIGHT 2016 Mineralogical Society of America Olivine Chemical properties Silicates Carrez, Philippe oth Cordier, Patrick oth Enthalten in American mineralogist Washington, DC [u.a.] : Soc., 1916 101(2016), 9-10, Seite 2085 (DE-627)129081795 (DE-600)3514-2 (DE-576)014414716 0003-004X nnns volume:101 year:2016 number:9-10 pages:2085 http://dx.doi.org/10.2l38/am-2016-5578CCBYNCND Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_21 GBV_ILN_22 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 GBV_ILN_188 GBV_ILN_2010 GBV_ILN_2015 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4323 38.30 AVZ AR 101 2016 9-10 2085 |
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Modeling is based on a multiphysics approach that allows calculating the constitutive equations associated with single slip for a wide range of temperatures and strain rates typical for the laboratory and the Earth's mantle. The model is based on the core structures of the rate limiting 1/2 {101} and [100](010) dissociated screw dislocations. After quantifying their lattice friction, glide is modeled through an elastic interaction model that allows calculating the critical configurations that trigger elementary displacements of dissociated dislocations. The constitutive relations corresponding to glide are then deduced with Orowan's equation to describe the average intracrystalline plasticity. The high stresses predicted by the model are found to be in good agreement with experimental data on plastic deformation of wadsleyite at high-pressure conditions. Moreover, it is found that even at appropriate mantle strain rates, glide of dislocations remain difficult with critical resolved shear stress (CRSS) values typically larger than 100 MPa. 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Ritterbex, Sebastian ddc 550 bkl 38.30 misc Olivine misc Chemical properties misc Silicates Modeling dislocation glide and lattice friction in [Mg.sub.2]Si[O.sub.4] wadsleyite in conditions of the earth's transition zone |
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Modeling dislocation glide and lattice friction in [Mg.sub.2]Si[O.sub.4] wadsleyite in conditions of the earth's transition zone |
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Modeling dislocation glide and lattice friction in [Mg.sub.2]Si[O.sub.4] wadsleyite in conditions of the earth's transition zone |
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modeling dislocation glide and lattice friction in [mg.sub.2]si[o.sub.4] wadsleyite in conditions of the earth's transition zone |
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Modeling dislocation glide and lattice friction in [Mg.sub.2]Si[O.sub.4] wadsleyite in conditions of the earth's transition zone |
| abstract |
Thermally activated dislocation glide in [Mg.sub.2]Si[O.sub.4] wadsleyite at 15 GPa has been modeled to investigate its potential contribution to plastic deformation of wadsleyite in the Earth's transition zone. Modeling is based on a multiphysics approach that allows calculating the constitutive equations associated with single slip for a wide range of temperatures and strain rates typical for the laboratory and the Earth's mantle. The model is based on the core structures of the rate limiting 1/2 {101} and [100](010) dissociated screw dislocations. After quantifying their lattice friction, glide is modeled through an elastic interaction model that allows calculating the critical configurations that trigger elementary displacements of dissociated dislocations. The constitutive relations corresponding to glide are then deduced with Orowan's equation to describe the average intracrystalline plasticity. The high stresses predicted by the model are found to be in good agreement with experimental data on plastic deformation of wadsleyite at high-pressure conditions. Moreover, it is found that even at appropriate mantle strain rates, glide of dislocations remain difficult with critical resolved shear stress (CRSS) values typically larger than 100 MPa. This implies the inefficiency of dislocation glide to the overall plastic deformation of [Mg.sub.2]Si[O.sub.4] wadsleyite under transition zone conditions. |
| abstractGer |
Thermally activated dislocation glide in [Mg.sub.2]Si[O.sub.4] wadsleyite at 15 GPa has been modeled to investigate its potential contribution to plastic deformation of wadsleyite in the Earth's transition zone. Modeling is based on a multiphysics approach that allows calculating the constitutive equations associated with single slip for a wide range of temperatures and strain rates typical for the laboratory and the Earth's mantle. The model is based on the core structures of the rate limiting 1/2 {101} and [100](010) dissociated screw dislocations. After quantifying their lattice friction, glide is modeled through an elastic interaction model that allows calculating the critical configurations that trigger elementary displacements of dissociated dislocations. The constitutive relations corresponding to glide are then deduced with Orowan's equation to describe the average intracrystalline plasticity. The high stresses predicted by the model are found to be in good agreement with experimental data on plastic deformation of wadsleyite at high-pressure conditions. Moreover, it is found that even at appropriate mantle strain rates, glide of dislocations remain difficult with critical resolved shear stress (CRSS) values typically larger than 100 MPa. This implies the inefficiency of dislocation glide to the overall plastic deformation of [Mg.sub.2]Si[O.sub.4] wadsleyite under transition zone conditions. |
| abstract_unstemmed |
Thermally activated dislocation glide in [Mg.sub.2]Si[O.sub.4] wadsleyite at 15 GPa has been modeled to investigate its potential contribution to plastic deformation of wadsleyite in the Earth's transition zone. Modeling is based on a multiphysics approach that allows calculating the constitutive equations associated with single slip for a wide range of temperatures and strain rates typical for the laboratory and the Earth's mantle. The model is based on the core structures of the rate limiting 1/2 {101} and [100](010) dissociated screw dislocations. After quantifying their lattice friction, glide is modeled through an elastic interaction model that allows calculating the critical configurations that trigger elementary displacements of dissociated dislocations. The constitutive relations corresponding to glide are then deduced with Orowan's equation to describe the average intracrystalline plasticity. The high stresses predicted by the model are found to be in good agreement with experimental data on plastic deformation of wadsleyite at high-pressure conditions. Moreover, it is found that even at appropriate mantle strain rates, glide of dislocations remain difficult with critical resolved shear stress (CRSS) values typically larger than 100 MPa. This implies the inefficiency of dislocation glide to the overall plastic deformation of [Mg.sub.2]Si[O.sub.4] wadsleyite under transition zone conditions. |
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Modeling dislocation glide and lattice friction in [Mg.sub.2]Si[O.sub.4] wadsleyite in conditions of the earth's transition zone |
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