Evading dynamic strength and ductility trade-off in a high-entropy alloy via local chemical ordering
Abstract Strength-ductility trade-off in metals is sever under dynamic loading due to the strain rate effect and adiabatic shear failure. Here, we demonstrate that both strength and ductility progressively increase with increasing strain rate in a body-centered cubic TiZrNbTa refractory high-entropy...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2023-04-01
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| Series: | Communications Materials |
| Online Access: | https://doi.org/10.1038/s43246-023-00352-9 |
| _version_ | 1797845893625413632 |
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| author | Ruixin Wang Dabo Duan Yu Tang Zhifeng Lei Shun Li Rong Chen Chao Ma Yuan Wu Shuxin Bai Zhaoping Lu |
| author_facet | Ruixin Wang Dabo Duan Yu Tang Zhifeng Lei Shun Li Rong Chen Chao Ma Yuan Wu Shuxin Bai Zhaoping Lu |
| author_sort | Ruixin Wang |
| collection | DOAJ |
| description | Abstract Strength-ductility trade-off in metals is sever under dynamic loading due to the strain rate effect and adiabatic shear failure. Here, we demonstrate that both strength and ductility progressively increase with increasing strain rate in a body-centered cubic TiZrNbTa refractory high-entropy alloy. We find that a prominent strain rate effect occurs, with a yield strength of 1879 ± 10 MPa at a strain rate of 6500 s−1, which is double that compared to a strain rate of 10−3 s−1. Simultaneously, Zr- and (Nb, Ta)-enriched local chemical ordering stimulates dislocation slip, enhancing homogeneous deformation capacity and adiabatic shear resistance under high strain rates. These findings suggest the importance of local chemical ordering to the dynamic properties of high-entropy alloys, and offer a way to develop metallic materials with improved dynamic mechanical properties. |
| first_indexed | 2024-04-09T17:46:21Z |
| format | Article |
| id | doaj.art-ae90bdfc332c4b4a955b70fbef3b687f |
| institution | Directory Open Access Journal |
| issn | 2662-4443 |
| language | English |
| last_indexed | 2024-04-09T17:46:21Z |
| publishDate | 2023-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Materials |
| spelling | doaj.art-ae90bdfc332c4b4a955b70fbef3b687f2023-04-16T11:20:15ZengNature PortfolioCommunications Materials2662-44432023-04-01411910.1038/s43246-023-00352-9Evading dynamic strength and ductility trade-off in a high-entropy alloy via local chemical orderingRuixin Wang0Dabo Duan1Yu Tang2Zhifeng Lei3Shun Li4Rong Chen5Chao Ma6Yuan Wu7Shuxin Bai8Zhaoping Lu9College of Aerospace Science and Engineering, National University of Defense TechnologyBeijing Advanced Innovation Center for Materials Genome Engineering, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology BeijingCollege of Aerospace Science and Engineering, National University of Defense TechnologyCollege of Materials Science and Engineering, Hunan UniversityCollege of Aerospace Science and Engineering, National University of Defense TechnologyCollege of Sciences, National University of Defense TechnologyCollege of Materials Science and Engineering, Hunan UniversityBeijing Advanced Innovation Center for Materials Genome Engineering, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology BeijingCollege of Aerospace Science and Engineering, National University of Defense TechnologyBeijing Advanced Innovation Center for Materials Genome Engineering, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology BeijingAbstract Strength-ductility trade-off in metals is sever under dynamic loading due to the strain rate effect and adiabatic shear failure. Here, we demonstrate that both strength and ductility progressively increase with increasing strain rate in a body-centered cubic TiZrNbTa refractory high-entropy alloy. We find that a prominent strain rate effect occurs, with a yield strength of 1879 ± 10 MPa at a strain rate of 6500 s−1, which is double that compared to a strain rate of 10−3 s−1. Simultaneously, Zr- and (Nb, Ta)-enriched local chemical ordering stimulates dislocation slip, enhancing homogeneous deformation capacity and adiabatic shear resistance under high strain rates. These findings suggest the importance of local chemical ordering to the dynamic properties of high-entropy alloys, and offer a way to develop metallic materials with improved dynamic mechanical properties.https://doi.org/10.1038/s43246-023-00352-9 |
| spellingShingle | Ruixin Wang Dabo Duan Yu Tang Zhifeng Lei Shun Li Rong Chen Chao Ma Yuan Wu Shuxin Bai Zhaoping Lu Evading dynamic strength and ductility trade-off in a high-entropy alloy via local chemical ordering Communications Materials |
| title | Evading dynamic strength and ductility trade-off in a high-entropy alloy via local chemical ordering |
| title_full | Evading dynamic strength and ductility trade-off in a high-entropy alloy via local chemical ordering |
| title_fullStr | Evading dynamic strength and ductility trade-off in a high-entropy alloy via local chemical ordering |
| title_full_unstemmed | Evading dynamic strength and ductility trade-off in a high-entropy alloy via local chemical ordering |
| title_short | Evading dynamic strength and ductility trade-off in a high-entropy alloy via local chemical ordering |
| title_sort | evading dynamic strength and ductility trade off in a high entropy alloy via local chemical ordering |
| url | https://doi.org/10.1038/s43246-023-00352-9 |
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