| Ultrahigh strength and ductility in newly developed materials with coherent nanolamellar architectures | |
| Fan, Lei1; Yang, Tao2; Zhao, Yilu2; Luan, Junhua2; Zhou, Gang3; Wang, Hao3; Jiao, Zengbao1; Liu, Chain-Tsuan2 | |
| Corresponding Author | Jiao, Zengbao(zb.jiao@polyu.edu.hk) ; Liu, Chain-Tsuan(chainliu@cityu.edu.hk) |
| 2020-12-07 | |
| Source Publication | NATURE COMMUNICATIONS
 |
| ISSN | 2041-1723 |
| Volume | 11Issue:1Pages:8 |
| Abstract | Nano-lamellar materials with ultrahigh strengths and unusual physical properties are of technological importance for structural applications. However, these materials generally suffer from low tensile ductility, which severely limits their practical utility. Here we show that markedly enhanced tensile ductility can be achieved in coherent nano-lamellar alloys, which exhibit an unprecedented combination of over 2GPa yield strength and 16% uniform tensile ductility. The ultrahigh strength originates mainly from the lamellar boundary strengthening, whereas the large ductility correlates to a progressive work-hardening mechanism regulated by the unique nano-lamellar architecture. The coherent lamellar boundaries facilitate the dislocation transmission, which eliminates the stress concentrations at the boundaries. Meanwhile, deformation-induced hierarchical stacking-fault networks and associated high-density Lomer-Cottrell locks enhance the work hardening response, leading to unusually large tensile ductilities. The coherent nano-lamellar strategy can potentially be applied to many other alloys and open new avenues for designing ultrastrong yet ductile materials for technological applications. Nano-lamellar materials with ultrahigh strengths are highly desirable for technological applications. Here the authors report a nanolamellar architecturing approach by utilizing coherent L12 structures to achieve ultrahigh strength and ductility in Ni-Fe-Co-Cr-Al-Ti multicomponent alloys. |
| Funding Organization | Early Career Scheme from the Research Grants Council (RGC) of Hong Kong ; National Natural Science Foundation of China ; internal research fund from PolyU ; Hong Kong RGC |
| DOI | 10.1038/s41467-020-20109-z |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Early Career Scheme from the Research Grants Council (RGC) of Hong Kong[25202719] ; National Natural Science Foundation of China[51801169] ; internal research fund from PolyU[P0009738] ; internal research fund from PolyU[P0013994] ; Hong Kong RGC[11213319] ; Hong Kong RGC[11202718] |
| WOS Research Area | Science & Technology - Other Topics |
| WOS Subject | Multidisciplinary Sciences |
| WOS ID | WOS:000598906000003 |
| Publisher | NATURE RESEARCH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/158869 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Jiao, Zengbao; Liu, Chain-Tsuan |
| Affiliation | 1.Hong Kong Polytech Univ, Dept Mech Engn, Hong Kong, Peoples R China 2.City Univ Hong Kong, Dept Mat Sci & Engn, Hong Kong, Peoples R China 3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Fan, Lei,Yang, Tao,Zhao, Yilu,et al. Ultrahigh strength and ductility in newly developed materials with coherent nanolamellar architectures[J]. NATURE COMMUNICATIONS,2020,11(1):8. |
| APA | Fan, Lei.,Yang, Tao.,Zhao, Yilu.,Luan, Junhua.,Zhou, Gang.,...&Liu, Chain-Tsuan.(2020).Ultrahigh strength and ductility in newly developed materials with coherent nanolamellar architectures.NATURE COMMUNICATIONS,11(1),8. |
| MLA | Fan, Lei,et al."Ultrahigh strength and ductility in newly developed materials with coherent nanolamellar architectures".NATURE COMMUNICATIONS 11.1(2020):8. |
| 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