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Ultrastrong nanotwinned pure nickel with extremely fine twin thickness
Duan, Fenghui1; Lin, Yan1; Pan, Jie1; Zhao, Lei2; Guo, Qiang2; Zhang, Di2; Li, Yi1
Corresponding AuthorPan, Jie(jiepan@imr.ac.cn) ; Guo, Qiang(guoq@sjtu.edu.cn) ; Li, Yi(liyi@imr.ac.cn)
2021-06-01
Source PublicationSCIENCE ADVANCES
ISSN2375-2548
Volume7Issue:27Pages:7
AbstractThe 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 OrganizationNational 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
DOI10.1126/sciadv.abg5113
Indexed BySCI
Language英语
Funding ProjectNational 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 AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000668591600006
PublisherAMER ASSOC ADVANCEMENT SCIENCE
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/160224
Collection中国科学院金属研究所
Corresponding AuthorPan, Jie; Guo, Qiang; Li, Yi
Affiliation1.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.
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