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Microstructural fingerprints of phase transitions in shock-loaded iron
The complex structural transformation in crystals under static pressure or shock loading has been a subject of long-standing interest to materials scientists and physicists. The polymorphic transformation is of particular importance for iron (Fe), due to its technological and sociological significan...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3548189/ https://www.ncbi.nlm.nih.gov/pubmed/23336068 http://dx.doi.org/10.1038/srep01086 |
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author | Wang, S. J. Sui, M. L. Chen, Y. T. Lu, Q. H. Ma, E. Pei, X. Y. Li, Q. Z. Hu, H. B. |
author_facet | Wang, S. J. Sui, M. L. Chen, Y. T. Lu, Q. H. Ma, E. Pei, X. Y. Li, Q. Z. Hu, H. B. |
author_sort | Wang, S. J. |
collection | PubMed |
description | The complex structural transformation in crystals under static pressure or shock loading has been a subject of long-standing interest to materials scientists and physicists. The polymorphic transformation is of particular importance for iron (Fe), due to its technological and sociological significance in the development of human civilization, as well as its prominent presence in the earth's core. The martensitic transformation α→ε (bcc→hcp) in iron under shock-loading, due to its reversible and transient nature, requires non-trivial detective work to uncover its occurrence. Here we reveal refined microstructural fingerprints, needle-like colonies and three sets of {112}<111> twins with a threefold symmetry, with tell-tale features that are indicative of two sequential martensitic transformations in the reversible α→ε phase transition, even though no ε is retained in the post-shock samples. The signature orientation relationships are consistent with previously-proposed transformation mechanisms, and the unique microstructural fingerprints enable a quantitative assessment of the volume fraction transformed. |
format | Online Article Text |
id | pubmed-3548189 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-35481892013-01-18 Microstructural fingerprints of phase transitions in shock-loaded iron Wang, S. J. Sui, M. L. Chen, Y. T. Lu, Q. H. Ma, E. Pei, X. Y. Li, Q. Z. Hu, H. B. Sci Rep Article The complex structural transformation in crystals under static pressure or shock loading has been a subject of long-standing interest to materials scientists and physicists. The polymorphic transformation is of particular importance for iron (Fe), due to its technological and sociological significance in the development of human civilization, as well as its prominent presence in the earth's core. The martensitic transformation α→ε (bcc→hcp) in iron under shock-loading, due to its reversible and transient nature, requires non-trivial detective work to uncover its occurrence. Here we reveal refined microstructural fingerprints, needle-like colonies and three sets of {112}<111> twins with a threefold symmetry, with tell-tale features that are indicative of two sequential martensitic transformations in the reversible α→ε phase transition, even though no ε is retained in the post-shock samples. The signature orientation relationships are consistent with previously-proposed transformation mechanisms, and the unique microstructural fingerprints enable a quantitative assessment of the volume fraction transformed. Nature Publishing Group 2013-01-18 /pmc/articles/PMC3548189/ /pubmed/23336068 http://dx.doi.org/10.1038/srep01086 Text en Copyright © 2013, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/ |
spellingShingle | Article Wang, S. J. Sui, M. L. Chen, Y. T. Lu, Q. H. Ma, E. Pei, X. Y. Li, Q. Z. Hu, H. B. Microstructural fingerprints of phase transitions in shock-loaded iron |
title | Microstructural fingerprints of phase transitions in shock-loaded iron |
title_full | Microstructural fingerprints of phase transitions in shock-loaded iron |
title_fullStr | Microstructural fingerprints of phase transitions in shock-loaded iron |
title_full_unstemmed | Microstructural fingerprints of phase transitions in shock-loaded iron |
title_short | Microstructural fingerprints of phase transitions in shock-loaded iron |
title_sort | microstructural fingerprints of phase transitions in shock-loaded iron |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3548189/ https://www.ncbi.nlm.nih.gov/pubmed/23336068 http://dx.doi.org/10.1038/srep01086 |
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