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Microstructural Design for Improving Ductility of An Initially Brittle Refractory High Entropy Alloy
Typically, refractory high-entropy alloys (RHEAs), comprising a two-phase ordered B2 + BCC microstructure, exhibit extraordinarily high yield strengths, but poor ductility at room temperature, limiting their engineering application. The poor ductility is attributed to the continuous matrix being the...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5995863/ https://www.ncbi.nlm.nih.gov/pubmed/29891942 http://dx.doi.org/10.1038/s41598-018-27144-3 |
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author | Soni, V. Senkov, O. N. Gwalani, B. Miracle, D. B. Banerjee, R. |
author_facet | Soni, V. Senkov, O. N. Gwalani, B. Miracle, D. B. Banerjee, R. |
author_sort | Soni, V. |
collection | PubMed |
description | Typically, refractory high-entropy alloys (RHEAs), comprising a two-phase ordered B2 + BCC microstructure, exhibit extraordinarily high yield strengths, but poor ductility at room temperature, limiting their engineering application. The poor ductility is attributed to the continuous matrix being the ordered B2 phase in these alloys. This paper presents a novel approach to microstructural engineering of RHEAs to form an “inverted” BCC + B2 microstructure with discrete B2 precipitates dispersed within a continuous BCC matrix, resulting in improved room temperature compressive ductility, while maintaining high yield strength at both room and elevated temperature. |
format | Online Article Text |
id | pubmed-5995863 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-59958632018-06-21 Microstructural Design for Improving Ductility of An Initially Brittle Refractory High Entropy Alloy Soni, V. Senkov, O. N. Gwalani, B. Miracle, D. B. Banerjee, R. Sci Rep Article Typically, refractory high-entropy alloys (RHEAs), comprising a two-phase ordered B2 + BCC microstructure, exhibit extraordinarily high yield strengths, but poor ductility at room temperature, limiting their engineering application. The poor ductility is attributed to the continuous matrix being the ordered B2 phase in these alloys. This paper presents a novel approach to microstructural engineering of RHEAs to form an “inverted” BCC + B2 microstructure with discrete B2 precipitates dispersed within a continuous BCC matrix, resulting in improved room temperature compressive ductility, while maintaining high yield strength at both room and elevated temperature. Nature Publishing Group UK 2018-06-11 /pmc/articles/PMC5995863/ /pubmed/29891942 http://dx.doi.org/10.1038/s41598-018-27144-3 Text en © The Author(s) 2018 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 Soni, V. Senkov, O. N. Gwalani, B. Miracle, D. B. Banerjee, R. Microstructural Design for Improving Ductility of An Initially Brittle Refractory High Entropy Alloy |
title | Microstructural Design for Improving Ductility of An Initially Brittle Refractory High Entropy Alloy |
title_full | Microstructural Design for Improving Ductility of An Initially Brittle Refractory High Entropy Alloy |
title_fullStr | Microstructural Design for Improving Ductility of An Initially Brittle Refractory High Entropy Alloy |
title_full_unstemmed | Microstructural Design for Improving Ductility of An Initially Brittle Refractory High Entropy Alloy |
title_short | Microstructural Design for Improving Ductility of An Initially Brittle Refractory High Entropy Alloy |
title_sort | microstructural design for improving ductility of an initially brittle refractory high entropy alloy |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5995863/ https://www.ncbi.nlm.nih.gov/pubmed/29891942 http://dx.doi.org/10.1038/s41598-018-27144-3 |
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