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- Publisher Website: 10.1016/j.actamat.2013.06.026
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Article: Anatomy of nanomaterial deformation: Grain boundary sliding, plasticity and cavitation in nanocrystalline Ni
Title | Anatomy of nanomaterial deformation: Grain boundary sliding, plasticity and cavitation in nanocrystalline Ni |
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Authors | |
Keywords | Size effects Molecular dynamics simulations Plastic deformation Nanomaterials |
Issue Date | 2013 |
Citation | Acta Materialia, 2013, v. 61, n. 15, p. 5807-5820 How to Cite? |
Abstract | The deformation of nanocrystalline metals is a complex process that involves a cascade of plastic events, including dislocation motion, grain boundary activity and cavitation. These mechanisms act simultaneously and synergistically during fracture, masking their individual roles and often resulting in a wide range of failure modes in the same material. Using large-scale molecular dynamics simulations, we dissect the size-dependent deformation of nanocrystalline Ni nanowires for a range of diameters spanning a few nanometers to the bulk. By analyzing the localization of von Mises shear strain and stress triaxiality, we identify the key nanostructural features, the role of each elementary process and the dominant deformation mechanism as a function of sample diameter. Our atomic level analysis not only provides a fundamental understanding of the deformation of nanocrystalline Ni, but also demonstrates that large-scale simulations can be an essential complement for modern in situ electron microscopy/atom-probe tomography. © 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
Persistent Identifier | http://hdl.handle.net/10722/303405 |
ISSN | 2021 Impact Factor: 9.209 2020 SCImago Journal Rankings: 3.322 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Wu, Z. X. | - |
dc.contributor.author | Zhang, Y. W. | - |
dc.contributor.author | Jhon, M. H. | - |
dc.contributor.author | Srolovitz, D. J. | - |
dc.date.accessioned | 2021-09-15T08:25:14Z | - |
dc.date.available | 2021-09-15T08:25:14Z | - |
dc.date.issued | 2013 | - |
dc.identifier.citation | Acta Materialia, 2013, v. 61, n. 15, p. 5807-5820 | - |
dc.identifier.issn | 1359-6454 | - |
dc.identifier.uri | http://hdl.handle.net/10722/303405 | - |
dc.description.abstract | The deformation of nanocrystalline metals is a complex process that involves a cascade of plastic events, including dislocation motion, grain boundary activity and cavitation. These mechanisms act simultaneously and synergistically during fracture, masking their individual roles and often resulting in a wide range of failure modes in the same material. Using large-scale molecular dynamics simulations, we dissect the size-dependent deformation of nanocrystalline Ni nanowires for a range of diameters spanning a few nanometers to the bulk. By analyzing the localization of von Mises shear strain and stress triaxiality, we identify the key nanostructural features, the role of each elementary process and the dominant deformation mechanism as a function of sample diameter. Our atomic level analysis not only provides a fundamental understanding of the deformation of nanocrystalline Ni, but also demonstrates that large-scale simulations can be an essential complement for modern in situ electron microscopy/atom-probe tomography. © 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. | - |
dc.language | eng | - |
dc.relation.ispartof | Acta Materialia | - |
dc.subject | Size effects | - |
dc.subject | Molecular dynamics simulations | - |
dc.subject | Plastic deformation | - |
dc.subject | Nanomaterials | - |
dc.title | Anatomy of nanomaterial deformation: Grain boundary sliding, plasticity and cavitation in nanocrystalline Ni | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.actamat.2013.06.026 | - |
dc.identifier.scopus | eid_2-s2.0-84881317749 | - |
dc.identifier.volume | 61 | - |
dc.identifier.issue | 15 | - |
dc.identifier.spage | 5807 | - |
dc.identifier.epage | 5820 | - |
dc.identifier.isi | WOS:000323801500025 | - |