Continuum modeling of dislocation starvation and subsequent nucleation in nano-pillar compressions
The mechanical behavior of single crystalline aluminum nano-pillars under uniaxial compression differs from bulk Al in that the former is characterized by a smoother transition from elasticity to plasticity. We propose an extension of the phenomenological model of dislocation starvation originally p...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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2012
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| _version_ | 1826284892060647424 |
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| author | Jérusalem, A Fernández, A Kunz, A Greer, JR |
| author_facet | Jérusalem, A Fernández, A Kunz, A Greer, JR |
| author_sort | Jérusalem, A |
| collection | OXFORD |
| description | The mechanical behavior of single crystalline aluminum nano-pillars under uniaxial compression differs from bulk Al in that the former is characterized by a smoother transition from elasticity to plasticity. We propose an extension of the phenomenological model of dislocation starvation originally proposed in [Greer and Nix, Phys. Rev. B 73 (2006) 245410] additionally accounting for dislocation nucleation. The calibrated and validated continuum model successfully captures the intrinsic mechanisms leading to the transition from dislocation starvation to dislocation nucleation in fcc nano-pillars. © 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| first_indexed | 2024-03-07T01:20:39Z |
| format | Journal article |
| id | oxford-uuid:9032b01b-d7c5-4f20-84ba-79820cf9782b |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:20:39Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:9032b01b-d7c5-4f20-84ba-79820cf9782b2022-03-26T23:09:58ZContinuum modeling of dislocation starvation and subsequent nucleation in nano-pillar compressionsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:9032b01b-d7c5-4f20-84ba-79820cf9782bEnglishSymplectic Elements at Oxford2012Jérusalem, AFernández, AKunz, AGreer, JRThe mechanical behavior of single crystalline aluminum nano-pillars under uniaxial compression differs from bulk Al in that the former is characterized by a smoother transition from elasticity to plasticity. We propose an extension of the phenomenological model of dislocation starvation originally proposed in [Greer and Nix, Phys. Rev. B 73 (2006) 245410] additionally accounting for dislocation nucleation. The calibrated and validated continuum model successfully captures the intrinsic mechanisms leading to the transition from dislocation starvation to dislocation nucleation in fcc nano-pillars. © 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| spellingShingle | Jérusalem, A Fernández, A Kunz, A Greer, JR Continuum modeling of dislocation starvation and subsequent nucleation in nano-pillar compressions |
| title | Continuum modeling of dislocation starvation and subsequent nucleation in nano-pillar compressions |
| title_full | Continuum modeling of dislocation starvation and subsequent nucleation in nano-pillar compressions |
| title_fullStr | Continuum modeling of dislocation starvation and subsequent nucleation in nano-pillar compressions |
| title_full_unstemmed | Continuum modeling of dislocation starvation and subsequent nucleation in nano-pillar compressions |
| title_short | Continuum modeling of dislocation starvation and subsequent nucleation in nano-pillar compressions |
| title_sort | continuum modeling of dislocation starvation and subsequent nucleation in nano pillar compressions |
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