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A ductile Nb40Ti25Al15V10Ta5Hf3W2 refractory high entropy alloy with high specific strength for high-temperature applications

文献类型：期刊论文

作者Pang, Jingyu1,2; Zhang, Hongwei2; Zhang, Long2; Zhu, Zhengwang2; Fu, Huameng2; Li, Hong2; Wang, Aimin2; Li, Zhengkun2; Zhang, Haifeng2
刊名MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
出版日期2022-01-13
卷号831页码:9
ISSN号0921-5093
关键词Refractory high entropy alloy B2 precipitate High-temperature performance Specific yield strength Deformation behavior
DOI10.1016/j.msea.2021.142290
通讯作者Zhang, Hongwei(hongweizhang@imr.ac.cn) ; Zhang, Long(zhanglong@imr.ac.cn)
英文摘要Refractory high entropy alloys (RHEAs) with good high-temperature softening resistance have been revealed as promising candidates for high-temperature structural materials. In this work, a low-density ductile RHEA, Nb40Ti25Al15V10Ta5Hf3W2, has been developed. The RHEA with a BCC matrix and B2 nanoprecipitates exhibits excellent specific yield strength. The compressive specific yield strength (sigma(0.2)/rho) at 1073 K is as high as 83.2 MPa g(-1) cm(3). The different deformation behaviors during compression at 1073 K and 1273 K are also identified. The dislocation-dominated deformation provides the initial strain hardening capability, and then microcracks and dynamic recovery accelerate the transition from strain hardening to softening at 1073 K. While the diffusion-controlled dislocation annihilation and continuous dynamic recrystallization (DRX) are the dominant reasons for persistent strain softening at 1273 K. Our work not only reports a promising RHEA with excellent high-temperature properties, but also promotes the development of RHEAs for high-temperature applications.
资助项目National Key Research and Development Program[2018YFB0703402] ; Chinese Academy of Sciences[ZDBS-LY-JSC023] ; Liao Ning Revitalization Talents Program[XLYC1802078] ; Liao Ning Revitalization Talents Program[XLYC1807062] ; Liaoning Key Research and Development Program[2020JH2/10100013] ; Youth Innovation Promotion Association CAS[2021188] ; Science and Technology on Transient Impact Laboratory[6142606192208]
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
出版者ELSEVIER SCIENCE SA
WOS记录号WOS:000730128600002
资助机构National Key Research and Development Program ; Chinese Academy of Sciences ; Liao Ning Revitalization Talents Program ; Liaoning Key Research and Development Program ; Youth Innovation Promotion Association CAS ; Science and Technology on Transient Impact Laboratory
源URL[http://ir.imr.ac.cn/handle/321006/167304]  
专题金属研究所_中国科学院金属研究所
通讯作者Zhang, Hongwei; Zhang, Long
作者单位1.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Pang, Jingyu,Zhang, Hongwei,Zhang, Long,et al. A ductile Nb40Ti25Al15V10Ta5Hf3W2 refractory high entropy alloy with high specific strength for high-temperature applications[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,831:9.
APA Pang, Jingyu.,Zhang, Hongwei.,Zhang, Long.,Zhu, Zhengwang.,Fu, Huameng.,...&Zhang, Haifeng.(2022).A ductile Nb40Ti25Al15V10Ta5Hf3W2 refractory high entropy alloy with high specific strength for high-temperature applications.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,831,9.
MLA Pang, Jingyu,et al."A ductile Nb40Ti25Al15V10Ta5Hf3W2 refractory high entropy alloy with high specific strength for high-temperature applications".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 831(2022):9.

入库方式： OAI收割

来源：金属研究所

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