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Consecutive crystallographic reorientations and superplasticity in body-centered cubic niobium nanowires
Plasticity of metallic nanowires is often controlled by the activities of single deformation mode. It remains largely unclear whether multiple deformation modes can be activated in an individual metallic nanowire and how much plasticity they can contribute. In situ nanomechanical testing reveals a s...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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American Association for the Advancement of Science
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6035040/ https://www.ncbi.nlm.nih.gov/pubmed/29984304 http://dx.doi.org/10.1126/sciadv.aas8850 |
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author | Wang, Qiannan Wang, Jiangwei Li, Jixue Zhang, Ze Mao, Scott X. |
author_facet | Wang, Qiannan Wang, Jiangwei Li, Jixue Zhang, Ze Mao, Scott X. |
author_sort | Wang, Qiannan |
collection | PubMed |
description | Plasticity of metallic nanowires is often controlled by the activities of single deformation mode. It remains largely unclear whether multiple deformation modes can be activated in an individual metallic nanowire and how much plasticity they can contribute. In situ nanomechanical testing reveals a superior plastic deformation ability of body-centered cubic (BCC) niobium nanowires, in which a remarkable elongation of more than 269% is achieved before fracture. This superplastic deformation originates from a synergy of consecutively nucleated multiple reorientation processes that occur for more than five times via three distinct mechanisms, that is, stress-activated phase transformation, deformation twinning, and slip-induced crystal rotation. These three coupled mechanisms work concurrently, resulting in sequential reorientations and therefore superplastic deformation of Nb nanowires. Our findings reveal a superior mechanical property of BCC Nb nanowires through the close coordination of multiple deformation modes, which may have some implications in other metallic nanowire systems. |
format | Online Article Text |
id | pubmed-6035040 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-60350402018-07-08 Consecutive crystallographic reorientations and superplasticity in body-centered cubic niobium nanowires Wang, Qiannan Wang, Jiangwei Li, Jixue Zhang, Ze Mao, Scott X. Sci Adv Research Articles Plasticity of metallic nanowires is often controlled by the activities of single deformation mode. It remains largely unclear whether multiple deformation modes can be activated in an individual metallic nanowire and how much plasticity they can contribute. In situ nanomechanical testing reveals a superior plastic deformation ability of body-centered cubic (BCC) niobium nanowires, in which a remarkable elongation of more than 269% is achieved before fracture. This superplastic deformation originates from a synergy of consecutively nucleated multiple reorientation processes that occur for more than five times via three distinct mechanisms, that is, stress-activated phase transformation, deformation twinning, and slip-induced crystal rotation. These three coupled mechanisms work concurrently, resulting in sequential reorientations and therefore superplastic deformation of Nb nanowires. Our findings reveal a superior mechanical property of BCC Nb nanowires through the close coordination of multiple deformation modes, which may have some implications in other metallic nanowire systems. American Association for the Advancement of Science 2018-07-06 /pmc/articles/PMC6035040/ /pubmed/29984304 http://dx.doi.org/10.1126/sciadv.aas8850 Text en Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Research Articles Wang, Qiannan Wang, Jiangwei Li, Jixue Zhang, Ze Mao, Scott X. Consecutive crystallographic reorientations and superplasticity in body-centered cubic niobium nanowires |
title | Consecutive crystallographic reorientations and superplasticity in body-centered cubic niobium nanowires |
title_full | Consecutive crystallographic reorientations and superplasticity in body-centered cubic niobium nanowires |
title_fullStr | Consecutive crystallographic reorientations and superplasticity in body-centered cubic niobium nanowires |
title_full_unstemmed | Consecutive crystallographic reorientations and superplasticity in body-centered cubic niobium nanowires |
title_short | Consecutive crystallographic reorientations and superplasticity in body-centered cubic niobium nanowires |
title_sort | consecutive crystallographic reorientations and superplasticity in body-centered cubic niobium nanowires |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6035040/ https://www.ncbi.nlm.nih.gov/pubmed/29984304 http://dx.doi.org/10.1126/sciadv.aas8850 |
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