| Ultrastrong nanotwinned pure nickel with extremely fine twin thickness | |
| Duan, Fenghui1; Lin, Yan1; Pan, Jie1; Zhao, Lei2; Guo, Qiang2; Zhang, Di2; Li, Yi1 | |
| Corresponding Author | Pan, Jie(jiepan@imr.ac.cn) ; Guo, Qiang(guoq@sjtu.edu.cn) ; Li, Yi(liyi@imr.ac.cn) |
| 2021-06-01 | |
| Source Publication | SCIENCE ADVANCES
 |
| ISSN | 2375-2548 |
| Volume | 7Issue:27Pages:7 |
| Abstract | The strength of nanocrystalline and nanotwinned metals stops increasing or even starts decreasing when their grain size or twin thickness is below a critical size-a phenomenon known as Hall-Petch breakdown-which hinders the attainment of ultrahigh strength. Here, we report continuous strengthening in nanotwinned pure Ni with twin thicknesses ranging from 81.0 to 2.9 nm. An unprecedented strength of 4.0 GPa was achieved at extremely fine twin thickness of 2.9 nm, which is about 12 times stronger than that of conventional coarse-grained nickel. This ultrahigh strength arises from the excellent stability of twin boundaries and their strong impedance to dislocation motion. In particular, we find that secondary nanotwins are activated to sustain plastic deformation, which also contribute to the high strength. These results not only advance the understanding of the strengthening mechanisms in nanotwinned metals but also offer an alternative pathway to develop engineering materials with ultrahigh strength. |
| Funding Organization | National Natural Science Foundation of China ; Shenyang National Laboratory for Materials Science ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Postdoctoral Program for Innovative Talents ; China Postdoctoral Science Foundation |
| DOI | 10.1126/sciadv.abg5113 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[52022100] ; National Natural Science Foundation of China[51871217] ; National Natural Science Foundation of China[52001075] ; National Natural Science Foundation of China[51771111] ; Shenyang National Laboratory for Materials Science[E01SL102] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2020194] ; National Postdoctoral Program for Innovative Talents[BX20190196] ; China Postdoctoral Science Foundation[2020 M671114] |
| WOS Research Area | Science & Technology - Other Topics |
| WOS Subject | Multidisciplinary Sciences |
| WOS ID | WOS:000668591600006 |
| Publisher | AMER ASSOC ADVANCEMENT SCIENCE |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/160224 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Pan, Jie; Guo, Qiang; Li, Yi |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, 800 Dongchuan Rd, Shanghai 200240, Peoples R China |
| Recommended Citation GB/T 7714 | Duan, Fenghui,Lin, Yan,Pan, Jie,et al. Ultrastrong nanotwinned pure nickel with extremely fine twin thickness[J]. SCIENCE ADVANCES,2021,7(27):7. |
| APA | Duan, Fenghui.,Lin, Yan.,Pan, Jie.,Zhao, Lei.,Guo, Qiang.,...&Li, Yi.(2021).Ultrastrong nanotwinned pure nickel with extremely fine twin thickness.SCIENCE ADVANCES,7(27),7. |
| MLA | Duan, Fenghui,et al."Ultrastrong nanotwinned pure nickel with extremely fine twin thickness".SCIENCE ADVANCES 7.27(2021):7. |
| 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