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Strong, Ductile, and Thermally Stable bcc-Mg Nanolaminates

Magnesium has attracted attention worldwide because it is the lightest structural metal. However, a high strength-to-weight ratio remains its only attribute, since an intrinsic lack of strength, ductility and low melting temperature severely restricts practical applications of Mg. Through interface...

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Autores principales: Pathak, Siddhartha, Velisavljevic, Nenad, Baldwin, J. Kevin, Jain, Manish, Zheng, Shijian, Mara, Nathan A., Beyerlein, Irene J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5557767/
https://www.ncbi.nlm.nih.gov/pubmed/28811523
http://dx.doi.org/10.1038/s41598-017-08302-5
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author Pathak, Siddhartha
Velisavljevic, Nenad
Baldwin, J. Kevin
Jain, Manish
Zheng, Shijian
Mara, Nathan A.
Beyerlein, Irene J.
author_facet Pathak, Siddhartha
Velisavljevic, Nenad
Baldwin, J. Kevin
Jain, Manish
Zheng, Shijian
Mara, Nathan A.
Beyerlein, Irene J.
author_sort Pathak, Siddhartha
collection PubMed
description Magnesium has attracted attention worldwide because it is the lightest structural metal. However, a high strength-to-weight ratio remains its only attribute, since an intrinsic lack of strength, ductility and low melting temperature severely restricts practical applications of Mg. Through interface strains, the crystal structure of Mg can be transformed and stabilized from a simple hexagonal (hexagonal close packed hcp) to body center cubic (bcc) crystal structure at ambient pressures. We demonstrate that when introduced into a nanocomposite bcc Mg is far more ductile, 50% stronger, and retains its strength after extended exposure to 200 C, which is 0.5 times its homologous temperature. These findings reveal an alternative solution to obtaining lightweight metals critically needed for future energy efficiency and fuel savings.
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spelling pubmed-55577672017-08-16 Strong, Ductile, and Thermally Stable bcc-Mg Nanolaminates Pathak, Siddhartha Velisavljevic, Nenad Baldwin, J. Kevin Jain, Manish Zheng, Shijian Mara, Nathan A. Beyerlein, Irene J. Sci Rep Article Magnesium has attracted attention worldwide because it is the lightest structural metal. However, a high strength-to-weight ratio remains its only attribute, since an intrinsic lack of strength, ductility and low melting temperature severely restricts practical applications of Mg. Through interface strains, the crystal structure of Mg can be transformed and stabilized from a simple hexagonal (hexagonal close packed hcp) to body center cubic (bcc) crystal structure at ambient pressures. We demonstrate that when introduced into a nanocomposite bcc Mg is far more ductile, 50% stronger, and retains its strength after extended exposure to 200 C, which is 0.5 times its homologous temperature. These findings reveal an alternative solution to obtaining lightweight metals critically needed for future energy efficiency and fuel savings. Nature Publishing Group UK 2017-08-15 /pmc/articles/PMC5557767/ /pubmed/28811523 http://dx.doi.org/10.1038/s41598-017-08302-5 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Pathak, Siddhartha
Velisavljevic, Nenad
Baldwin, J. Kevin
Jain, Manish
Zheng, Shijian
Mara, Nathan A.
Beyerlein, Irene J.
Strong, Ductile, and Thermally Stable bcc-Mg Nanolaminates
title Strong, Ductile, and Thermally Stable bcc-Mg Nanolaminates
title_full Strong, Ductile, and Thermally Stable bcc-Mg Nanolaminates
title_fullStr Strong, Ductile, and Thermally Stable bcc-Mg Nanolaminates
title_full_unstemmed Strong, Ductile, and Thermally Stable bcc-Mg Nanolaminates
title_short Strong, Ductile, and Thermally Stable bcc-Mg Nanolaminates
title_sort strong, ductile, and thermally stable bcc-mg nanolaminates
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5557767/
https://www.ncbi.nlm.nih.gov/pubmed/28811523
http://dx.doi.org/10.1038/s41598-017-08302-5
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