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Compositional effect on microstructure and mechanical properties of AlNbTiZr-based refractory high entropy alloys

文献类型：期刊论文

作者Zhou LL(周玲玲)3,4; Liu TW(刘天威)4; Zhang, ZhaoSen2; Hui, JunZhuang2; Li, ShaoWei2; Wang, WeiLi1
刊名JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
出版日期2024-07-01
卷号31页码:2052-2062
关键词Refractory high-entropy alloys Microstructure Mechanical properties TEM
ISSN号2238-7854
DOI10.1016/j.jmrt.2024.06.208
通讯作者Liu, Tian-Wei(liutianwei@lnm.imech.ac.cn) ; Li, Shao-Wei(lishaowei@ustb.edu.cn)
英文摘要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.
分类号一类
WOS关键词STRENGTHENING MECHANISMS ; SOLID-SOLUTION ; DESIGN ; PREDICTION
资助项目National Natural Science Foundation of China[51931005] ; National Natural Science Foundation of China[51901235] ; Chinese Academy of Sciences[XDB0510300]
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:001264889800001
资助机构National Natural Science Foundation of China ; Chinese Academy of Sciences
其他责任者Liu, Tian-Wei ; Li, Shao-Wei
源URL[http://dspace.imech.ac.cn/handle/311007/95974]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Northwestern Polytech Univ, Dept Appl Phys, Xian 710072, Peoples R China
2.Univ Sci & Technol Beijing, Sch Mech Engn, Beijing 100083, Peoples R China;
3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
4.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China;
推荐引用方式
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.
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.

入库方式： OAI收割

来源：力学研究所

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