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Ultrastrong nanotwinned pure nickel with extremely fine twin thickness

文献类型：期刊论文

作者Duan, Fenghui1; Lin, Yan1; Pan, Jie1; Zhao, Lei2; Guo, Qiang2; Zhang, Di2; Li, Yi1
刊名SCIENCE ADVANCES
出版日期2021-06-01
卷号7期号:27页码:7
ISSN号2375-2548
DOI10.1126/sciadv.abg5113
通讯作者Pan, Jie(jiepan@imr.ac.cn) ; Guo, Qiang(guoq@sjtu.edu.cn) ; Li, Yi(liyi@imr.ac.cn)
英文摘要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.
资助项目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研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000668591600006
出版者AMER ASSOC ADVANCEMENT SCIENCE
资助机构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
源URL[http://ir.imr.ac.cn/handle/321006/160223]  
专题金属研究所_中国科学院金属研究所
通讯作者Pan, Jie; Guo, Qiang; Li, Yi
作者单位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
推荐引用方式
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.

入库方式： OAI收割

来源：金属研究所

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