D0<sub>22</sub> precipitates strengthened W-Ta-Fe-Ni refractory high-entropy alloy

doi:10.1016/j.jmst.2023.07.069

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	D0₂₂ precipitates strengthened W-Ta-Fe-Ni refractory high-entropy alloy
	Li, Tong 3,4; Chen, Jin -Xi 3,4; Liu, Tian-Wei 3,4; Chen, Yan 3,4; Luan, Jun-Hua ; Jiao, Zeng-Bao 1; Liu, Chain-Tsuan 2; Dai, Lan -Hong 3,4
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2024-04-01
卷号	177 页码:85-95
关键词	Refractory high entropy alloy Multi-phase structure D0(22) superlattice Precipitation strengthening
ISSN号	1005-0302
DOI	10.1016/j.jmst.2023.07.069
通讯作者	Dai, Lan -Hong(lhdai@lnm.imech.ac.cn)
英文摘要	Refractory high-entropy alloys have recently emerged as promising candidates for high-temperature structural applications. However, their performance is compromised by the trade-off required between strength and ductility. Here, a novel W30Ta5(FeNi)(65) refractory high-entropy alloy with an outstanding combination of strength and plasticity at both room and elevated temperatures is designed, based on the multi-phase transitions design strategy. The alloy comprises a body-centered cubic dendrite phase, a topologically close-packed mu rhombohedral phase, and a high-density coherent nano-precipitate gamma '' phase with the D0(22) structure (Ni3Ta type) embedded in a continuous face-centered cubic matrix. Owing to precipitation strengthening of D0(22), the yield stress of the alloy is determined as high as 1450 MPa, which is a significant improvement (similar to 100%) in comparison with the D0(22)-free alloy, without a loss of ductility. This alloy exhibits an excellent high-temperature strength, with the yield strengths of 1300 MPa at 600 degrees C and 320 MPa at 1000 degrees C. Detailed microstructural characterization using transmission electron microscopy, high-angle annular dark-field imaging, and three-dimensional atom probe tomography analyses indicated that this superior strength-plasticity combination stems from the synergy of a multiple-phase structure. These results provide a new insight into the design of RHEAs and other advanced alloys. (c) 2023 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目	National Natural Science Foundation of China[11790292] ; National Natural Science Foundation of China[11972346] ; National Natural Science Foundation of China[12102433] ; National Natural Science Foundation of China[U2141204] ; National Natural Science Foundation of China[11988102] ; National Key Research and Development Program of China[2017YFB0702003] ; Key Re-search Program of the Chinese Academy of Sciences[ZDRW-CN-2021-2-3] ; Strategic Priority Research Program ; Key Research Program of Frontier Sciences ; Science Challenge Project ; Key Research Program of the Chinese Academy of Sciences ; Opening Project of State Key Laboratory of Explosion Science and Technology ; [XDB22040302] ; [XDB22040303] ; [QYZDJSSW-JSC011] ; [TZ2016001] ; [KFJJ21-01Z]
WOS关键词	MECHANICAL-PROPERTIES ; FRACTURE-TOUGHNESS ; TEMPERATURE ; PHASE ; BEHAVIOR ; SUPERALLOY ; EVOLUTION ; MICROSTRUCTURE ; GAMMA''
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:001112071600001
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China ; Key Re-search Program of the Chinese Academy of Sciences ; Strategic Priority Research Program ; Key Research Program of Frontier Sciences ; Science Challenge Project ; Key Research Program of the Chinese Academy of Sciences ; Opening Project of State Key Laboratory of Explosion Science and Technology
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/93590]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Dai, Lan -Hong
作者单位	1.Hong Kong Polytech Univ, Dept Mech Engn, Hong Kong 999077, Peoples R China 2.City Univ Hong Kong, Dept Mat Sci & Engn, Interuniv Atom Probe Tomog Unit 3D, Hong Kong, Peoples R China 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, 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	Li, Tong,Chen, Jin -Xi,Liu, Tian-Wei,et al. D0₂₂ precipitates strengthened W-Ta-Fe-Ni refractory high-entropy alloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2024,177:85-95.
APA	Li, Tong.,Chen, Jin -Xi.,Liu, Tian-Wei.,Chen, Yan.,Luan, Jun-Hua.,...&Dai, Lan -Hong.(2024).D0₂₂ precipitates strengthened W-Ta-Fe-Ni refractory high-entropy alloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,177,85-95.
MLA	Li, Tong,et al."D0₂₂ precipitates strengthened W-Ta-Fe-Ni refractory high-entropy alloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 177(2024):85-95.