| A ductile Nb40Ti25Al15V10Ta5Hf3W2 refractory high entropy alloy with high specific strength for high-temperature applications | |
| Pang, Jingyu1,2; Zhang, Hongwei1; Zhang, Long1; Zhu, Zhengwang1; Fu, Huameng1; Li, Hong1; Wang, Aimin1; Li, Zhengkun1; Zhang, Haifeng1 | |
| Corresponding Author | Zhang, Hongwei(hongweizhang@imr.ac.cn) ; Zhang, Long(zhanglong@imr.ac.cn) |
| 2022-01-13 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| ISSN | 0921-5093 |
| Volume | 831Pages:9 |
| Abstract | 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. |
| Keyword | Refractory high entropy alloy B2 precipitate High-temperature performance Specific yield strength Deformation behavior |
| Funding Organization | 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 |
| DOI | 10.1016/j.msea.2021.142290 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000730128600002 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/167305 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Hongwei; Zhang, Long |
| Affiliation | 1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| Recommended Citation 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. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment