| Compositional effect on microstructure and mechanical properties of AlNbTiZr-based refractory high entropy alloys | |
Zhou LL(周玲玲)1,2; Liu TW(刘天威)1 ; Zhang, ZhaoSen3; Hui, JunZhuang3; Li, ShaoWei3; Wang, WeiLi4
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| Corresponding Author | Liu, Tian-Wei([email protected]) ; Li, Shao-Wei([email protected]) |
| Source Publication | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
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| 2024-07-01 | |
| Volume | 31Pages:2052-2062 |
| ISSN | 2238-7854 |
| Abstract | This study aims to investigate the phase composition, microstructure, and mechanical properties of three refractory high-entropy alloys (RHEAs): Al 7 (NbTiZr) 93 , Al 7 (NbTiZrMo) 93 , and Al 7 (NbTiZrTa) 93 . The as-cast Al 7 (NbTiZr) 93 alloy exhibits a single-phase BCC structure, with a yield strength (YS) of 1050 MPa at room temperature. The addition of Mo and Ta leads to the formation of Al 7 (NbTiZrMo) 93 and Al 7 (NbTiZrTa) 93 alloys with BCC-B 2 and B 2-FCC dual-phase structures, whose YS values reach 1741 MPa and 2350 MPa, respectively. At 800 degrees C, trace amounts of ordered B 2 phase are generated in the Al 7 (NbTiZr) 93 matrix, and the YS decreases from 1050 MPa at room temperature to 219 MPa at 800 degrees C. In the Al 7 (NbTiZrMo) 93 alloy, the 10 nm B 2 precipitates grow to several hundred nanometers, and the YS decreases to 431 MPa after compression at 800 degrees C. In the Al 7 (NbTiZrTa) 93 alloy, the grid B 2-FCC structure at room temperature transforms into a disordered BCC structure at 800 degrees C, yet possessing the YS of 908 MPa and demonstrating acceptable ductility. Moreover, Ta exhibits the better structural and performance matching than Mo in AlNbTiZr-based RHEAs. Therefore, it opens up new prospects for regulating the structure and high-temperature performance of AlNbTiZr-based RHEAs. |
| Keyword | Refractory high-entropy alloys Microstructure Mechanical properties TEM |
| DOI | 10.1016/j.jmrt.2024.06.208 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001264889800001 |
| WOS Keyword | STRENGTHENING MECHANISMS ; SOLID-SOLUTION ; DESIGN ; PREDICTION |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Funding Project | National Natural Science Foundation of China[51931005] ; National Natural Science Foundation of China[51901235] ; Chinese Academy of Sciences[XDB0510300] |
| Funding Organization | National Natural Science Foundation of China ; Chinese Academy of Sciences |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Liu, Tian-Wei ; Li, Shao-Wei |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/95975 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Univ Sci & Technol Beijing, Sch Mech Engn, Beijing 100083, Peoples R China; 4.Northwestern Polytech Univ, Dept Appl Phys, Xian 710072, Peoples R China |
| Recommended Citation GB/T 7714 | Zhou LL,Liu TW,Zhang, ZhaoSen,et al. Compositional effect on microstructure and mechanical properties of AlNbTiZr-based refractory high entropy alloys[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,31:2052-2062.Rp_Au:Liu, Tian-Wei, Li, Shao-Wei |
| APA | 周玲玲,刘天威,Zhang, ZhaoSen,Hui, JunZhuang,Li, ShaoWei,&Wang, WeiLi.(2024).Compositional effect on microstructure and mechanical properties of AlNbTiZr-based refractory high entropy alloys.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,31,2052-2062. |
| MLA | 周玲玲,et al."Compositional effect on microstructure and mechanical properties of AlNbTiZr-based refractory high entropy alloys".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 31(2024):2052-2062. |
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