| Achieving high ductility in the 1.7 GPa grade CoCrFeMnNi high-entropy alloy at 77 K | |
| Sun, S. J.1,2; Tian, Y. Z.1; Lin, H. R.1,2; Yang, H. J.1; Dong, X. G.3; Wang, Y. H.4; Zhang, Z. F.1,2 | |
| Corresponding Author | Tian, Y. Z.(yztian@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn) |
| 2019-01-07 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| ISSN | 0921-5093 |
| Volume | 740Pages:336-341 |
| Abstract | CoCrFeMnNi high-entropy alloys (HEAs) with partially recrystallized (PR) structure were fabricated by cold rolling and annealing. The microstructures were characterized and the tensile properties were tested at 77 K and 293 K, respectively. In contrast to the early necking at 293 K, an ultrahigh yield strength of 1692 MPa and a considerable uniform elongation of 10.3% were obtained at 77 K. The notable uniform elongation at 77 K can be attributed to the enhanced strain-hardening capability via introducing multiple deformation mechanisms in the recrystallized grains. This work provides a strategy to design high-strength high-ductility HEM for applications at cryogenic environments. |
| Keyword | High-entropy alloy (HEA) Recrystallization Deformation twins Yield strength Elongation |
| Funding Organization | National Natural Science Foundation of China (NSFC) ; Bureau Shenyang science and technology |
| DOI | 10.1016/j.msea.2018.10.094 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China (NSFC)[51501198] ; National Natural Science Foundation of China (NSFC)[51331007] ; Bureau Shenyang science and technology[17-107-6-00] |
| 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:000453494500034 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/130909 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Tian, Y. Z.; Zhang, Z. F. |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Mat Fatigue & Fracture Div, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 3.Shenyang Ligong Univ, Sch Mat Sci & Engn, Shenyang 110159, Liaoning, Peoples R China 4.Yanshan Univ, Natl Engn Res Ctr Equipment & Technol Cold Strip, Qinhuangdao 066004, Peoples R China |
| Recommended Citation GB/T 7714 | Sun, S. J.,Tian, Y. Z.,Lin, H. R.,et al. Achieving high ductility in the 1.7 GPa grade CoCrFeMnNi high-entropy alloy at 77 K[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,740:336-341. |
| APA | Sun, S. J..,Tian, Y. Z..,Lin, H. R..,Yang, H. J..,Dong, X. G..,...&Zhang, Z. F..(2019).Achieving high ductility in the 1.7 GPa grade CoCrFeMnNi high-entropy alloy at 77 K.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,740,336-341. |
| MLA | Sun, S. J.,et al."Achieving high ductility in the 1.7 GPa grade CoCrFeMnNi high-entropy alloy at 77 K".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 740(2019):336-341. |
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