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Metal-carbide eutectics with multiprincipal elements make superrefractory alloys
Materials with excellent high-temperature strength are now sought for applications in hypersonics, fusion reactors, and aerospace technologies. Conventional alloys and eutectic multiprincipal-element alloys (MPEAs) exhibit insufficient strengths at high temperatures due to low melting points and mic...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9269878/ https://www.ncbi.nlm.nih.gov/pubmed/35857469 http://dx.doi.org/10.1126/sciadv.abo2068 |
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author | Wei, Qinqin Xu, Xiandong Shen, Qiang Luo, Guoqiang Zhang, Jian Li, Jia Fang, Qihong Liu, Chain-Tsuan Chen, Mingwei Nieh, Tai-Gang Chen, Jianghua |
author_facet | Wei, Qinqin Xu, Xiandong Shen, Qiang Luo, Guoqiang Zhang, Jian Li, Jia Fang, Qihong Liu, Chain-Tsuan Chen, Mingwei Nieh, Tai-Gang Chen, Jianghua |
author_sort | Wei, Qinqin |
collection | PubMed |
description | Materials with excellent high-temperature strength are now sought for applications in hypersonics, fusion reactors, and aerospace technologies. Conventional alloys and eutectic multiprincipal-element alloys (MPEAs) exhibit insufficient strengths at high temperatures due to low melting points and microstructural instabilities. Here, we report a strategy to achieve exceptional high-temperature microstructural stability and strength by introducing eutectic carbide in a refractory MPEA. The synergistic strengthening effects from the multiprincipal-element mixing and strong dislocation blocking at the interwoven metal-carbide interface make the eutectic MPEA not only have outstanding high-temperature strength (>2 GPa at 1473 K) but also alleviate the room-temperature brittleness through microcrack tip blunting by layered metallic phase. This strategy offers a paradigm for the design of the next-generation high-temperature materials to bypass the low–melting point limitation of eutectic alloys and diffusion-dominated softening in conventional superalloys. |
format | Online Article Text |
id | pubmed-9269878 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-92698782022-07-20 Metal-carbide eutectics with multiprincipal elements make superrefractory alloys Wei, Qinqin Xu, Xiandong Shen, Qiang Luo, Guoqiang Zhang, Jian Li, Jia Fang, Qihong Liu, Chain-Tsuan Chen, Mingwei Nieh, Tai-Gang Chen, Jianghua Sci Adv Physical and Materials Sciences Materials with excellent high-temperature strength are now sought for applications in hypersonics, fusion reactors, and aerospace technologies. Conventional alloys and eutectic multiprincipal-element alloys (MPEAs) exhibit insufficient strengths at high temperatures due to low melting points and microstructural instabilities. Here, we report a strategy to achieve exceptional high-temperature microstructural stability and strength by introducing eutectic carbide in a refractory MPEA. The synergistic strengthening effects from the multiprincipal-element mixing and strong dislocation blocking at the interwoven metal-carbide interface make the eutectic MPEA not only have outstanding high-temperature strength (>2 GPa at 1473 K) but also alleviate the room-temperature brittleness through microcrack tip blunting by layered metallic phase. This strategy offers a paradigm for the design of the next-generation high-temperature materials to bypass the low–melting point limitation of eutectic alloys and diffusion-dominated softening in conventional superalloys. American Association for the Advancement of Science 2022-07-08 /pmc/articles/PMC9269878/ /pubmed/35857469 http://dx.doi.org/10.1126/sciadv.abo2068 Text en Copyright © 2022 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). https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://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 | Physical and Materials Sciences Wei, Qinqin Xu, Xiandong Shen, Qiang Luo, Guoqiang Zhang, Jian Li, Jia Fang, Qihong Liu, Chain-Tsuan Chen, Mingwei Nieh, Tai-Gang Chen, Jianghua Metal-carbide eutectics with multiprincipal elements make superrefractory alloys |
title | Metal-carbide eutectics with multiprincipal elements make superrefractory alloys |
title_full | Metal-carbide eutectics with multiprincipal elements make superrefractory alloys |
title_fullStr | Metal-carbide eutectics with multiprincipal elements make superrefractory alloys |
title_full_unstemmed | Metal-carbide eutectics with multiprincipal elements make superrefractory alloys |
title_short | Metal-carbide eutectics with multiprincipal elements make superrefractory alloys |
title_sort | metal-carbide eutectics with multiprincipal elements make superrefractory alloys |
topic | Physical and Materials Sciences |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9269878/ https://www.ncbi.nlm.nih.gov/pubmed/35857469 http://dx.doi.org/10.1126/sciadv.abo2068 |
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