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D022 precipitates strengthened W-Ta-Fe-Ni refractory high-entropy alloy

文献类型：期刊论文

作者Li T(李统); Chen JX(陈金玺); Liu TW(刘天威); Chen Y(陈艳); Luan, Jun-Hua; Jiao, Zeng-Bao; Liu, Chain-Tsuan; Dai LH(戴兰宏)
刊名JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
出版日期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
DOI10.1016/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.
分类号一类
WOS关键词MECHANICAL-PROPERTIES ; FRACTURE-TOUGHNESS ; TEMPERATURE ; PHASE ; BEHAVIOR ; SUPERALLOY ; EVOLUTION ; MICROSTRUCTURE ; GAMMA''
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
其他责任者Dai, Lan -Hong
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
推荐引用方式
GB/T 7714		 Li T,Chen JX,Liu TW,et al. D022 precipitates strengthened W-Ta-Fe-Ni refractory high-entropy alloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2024,177:85-95.
APA 李统.,陈金玺.,刘天威.,陈艳.,Luan, Jun-Hua.,...&戴兰宏.(2024).D022 precipitates strengthened W-Ta-Fe-Ni refractory high-entropy alloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,177,85-95.
MLA 李统,et al."D022 precipitates strengthened W-Ta-Fe-Ni refractory high-entropy alloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 177(2024):85-95.

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来源：力学研究所

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