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dc.contributor.author | Tsuru, Tomohito | en |
dc.contributor.author | Han, Shu | en |
dc.contributor.author | Matsuura, Shutaro | en |
dc.contributor.author | Chen, Zhenghao | en |
dc.contributor.author | Kishida, Kyosuke | en |
dc.contributor.author | Iobzenko, Ivan | en |
dc.contributor.author | Rao, Satish I. | en |
dc.contributor.author | Woodward, Christopher | en |
dc.contributor.author | George, Easo P. | en |
dc.contributor.author | Inui, Haruyuki | en |
dc.contributor.alternative | 都留, 智仁 | ja |
dc.contributor.alternative | 韓, 恕 | ja |
dc.contributor.alternative | 松浦, 周太郎 | ja |
dc.contributor.alternative | 陳, 正昊 | ja |
dc.contributor.alternative | 岸田, 恭輔 | ja |
dc.contributor.alternative | 乾, 晴行 | ja |
dc.date.accessioned | 2024-03-08T07:49:14Z | - |
dc.date.available | 2024-03-08T07:49:14Z | - |
dc.date.issued | 2024-02-24 | - |
dc.identifier.uri | http://hdl.handle.net/2433/287270 | - |
dc.description | 耐火ハイエントロピー合金の脆性と延性を支配する因子の解明 --多様な元素が拓く優れた合金の開発--. 京都大学プレスリリース. 2024-03-06. | ja |
dc.description.abstract | Refractory high-entropy alloys (RHEAs) are of interest for ultrahigh-temperature applications. To overcome their drawbacks — low-temperature brittleness and poor creep strength at high temperatures — improved fundamental understanding is needed. Using experiments, theory, and modeling, we investigated prototypical body-centered cubic (BCC) RHEAs, TiZrHfNbTa and VNbMoTaW. The former is compressible to 77 K, whereas the latter is not below 298 K. Hexagonal close-packed (HCP) elements in TiZrHfNbTa lower its dislocation core energy, increase lattice distortion, and lower its shear modulus relative to VNbMoTaW whose elements are all BCC. Screw dislocations dominate TiZrHfNbTa plasticity, but equal numbers of edges and screws exist in VNbTaMoW. Dislocation cores are compact in VNbTaMoW and extended in TiZrHfNbTa, and different macroscopic slip planes are activated in the two RHEAs, which we attribute to the concentration of HCP elements. Our findings demonstrate how ductility and strength can be controlled through the ratio of HCP to BCC elements in RHEAs. | en |
dc.language.iso | eng | - |
dc.publisher | Springer Nature | en |
dc.rights | © The Author(s) 2024 | en |
dc.rights | 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence 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. | en |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | - |
dc.subject | Mechanical properties | en |
dc.subject | Metals and alloys | en |
dc.title | Intrinsic factors responsible for brittle versus ductile nature of refractory high-entropy alloys | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.jtitle | Nature Communications | en |
dc.identifier.volume | 15 | - |
dc.relation.doi | 10.1038/s41467-024-45639-8 | - |
dc.textversion | publisher | - |
dc.identifier.artnum | 1706 | - |
dc.address | Nuclear Science and Engineering Center, Japan Atomic Energy Agency; Center for Elements Strategy Initiative for Structural Materials (ESISM), Kyoto University | en |
dc.address | Department of Materials Science and Engineering, Kyoto University | en |
dc.address | Department of Materials Science and Engineering, Kyoto University | en |
dc.address | Department of Materials Science and Engineering, Kyoto University | en |
dc.address | Center for Elements Strategy Initiative for Structural Materials (ESISM), Kyoto University; Department of Materials Science and Engineering, Kyoto University | en |
dc.address | Nuclear Science and Engineering Center, Japan Atomic Energy Agency | en |
dc.address | Department of Mechanical Engineering, Johns Hopkins University | en |
dc.address | Materials and Manufacturing Directorate, Air Force Research Laboratory (retired), Wright Patterson Air Force Base | en |
dc.address | Department of Materials Science and Engineering, University of Tennessee; Institute for Materials, Ruhr University Bochum | en |
dc.address | Center for Elements Strategy Initiative for Structural Materials (ESISM), Kyoto University; Department of Materials Science and Engineering, Kyoto University | en |
dc.identifier.pmid | 38402252 | - |
dc.relation.url | https://www.t.kyoto-u.ac.jp/ja/research/topics/20240306 | - |
dcterms.accessRights | open access | - |
datacite.awardNumber | 18H05450 | - |
datacite.awardNumber | 18H05451 | - |
datacite.awardNumber | 18H05453 | - |
datacite.awardNumber | 20K21084 | - |
datacite.awardNumber | 21H01651 | - |
datacite.awardNumber | 22H00262 | - |
datacite.awardNumber | 22H01762 | - |
datacite.awardNumber | 23KJ1302 | - |
datacite.awardNumber.uri | https://kaken.nii.ac.jp/grant/KAKENHI-ORGANIZER-18H05450/ | - |
datacite.awardNumber.uri | https://kaken.nii.ac.jp/grant/KAKENHI-PLANNED-18H05451/ | - |
datacite.awardNumber.uri | https://kaken.nii.ac.jp/grant/KAKENHI-PLANNED-18H05453/ | - |
datacite.awardNumber.uri | https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20K21084/ | - |
datacite.awardNumber.uri | https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21H01651/ | - |
datacite.awardNumber.uri | https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22H00262/ | - |
datacite.awardNumber.uri | https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22H01762/ | - |
datacite.awardNumber.uri | https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23KJ1302/ | - |
dc.identifier.eissn | 2041-1723 | - |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.awardTitle | ハイエントロピー合金新学術領域研究の連携的企画運営 | ja |
jpcoar.awardTitle | ハイエントロピー合金の特異な力学特性の支配因子解明 | ja |
jpcoar.awardTitle | 計算材料科学によるハイエントロピー合金の力学特性の解明と制御 | ja |
jpcoar.awardTitle | 協調原子移動型転位の運動による硬質結晶性材料の室温変形機構 | ja |
jpcoar.awardTitle | 複合元素添加遷移金属シリサイド基共晶材料の異常強化機構 | ja |
jpcoar.awardTitle | 平均原子変位 --新規な金属固溶強化の定量記述子(希薄からハイエントロピー合金まで) | ja |
jpcoar.awardTitle | BCC合金が持つ特異な変形機構の起源の解明と力学機能設計 | ja |
jpcoar.awardTitle | BCC構造を有する次世代Ti-Zr-Nb系耐熱ミディアムエントロピー合金の開発 | ja |
出現コレクション: | 学術雑誌掲載論文等 |
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