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Shear banding-induc...
Shear banding-induced 〈c + a〉 slip enables unprecedented strength-ductility combination of laminated metallic composites
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- Jiang, Shuang (författare)
- Northeastern Univ, Peoples R China
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- Peng, Ru (författare)
- Linköpings universitet,Konstruktionsmaterial,Tekniska fakulteten
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- Mathis, Kristian (författare)
- Charles Univ Prague, Czech Republic
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- Yan, Hai-Le (författare)
- Northeastern Univ, Peoples R China
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- Farkas, Gergely (författare)
- Czech Acad Sci, Czech Republic
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- Hegedues, Zoltan (författare)
- Deutsch Elektronen Synchrotron DESY, Germany
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- Lienert, Ulrich (författare)
- Deutsch Elektronen Synchrotron DESY, Germany
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- Moverare, Johan, Professor, 1973- (författare)
- Linköpings universitet,Konstruktionsmaterial,Tekniska fakulteten
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- Zhao, Xiang (författare)
- Northeastern Univ, Peoples R China
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- Zuo, Liang (författare)
- Northeastern Univ, Peoples R China
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- Jia, Nan (författare)
- Northeastern Univ, Peoples R China
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- Wang, Yan-Dong (författare)
- Univ Sci & Technol Beijing, Peoples R China
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(creator_code:org_t)
- Shenyang, China : Elsevier, 2022
- 2022
- Engelska.
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Ingår i: Journal of Materials Science & Technology. - Shenyang, China : Elsevier. - 1005-0302. ; 110, s. 260-268
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Shear bands in metallic materials have been reported to be catastrophic because they normally lead to non-uniform plastic deformation. Ductility of laminated metallic composites deteriorates with increasing processing strain, particularly for those having hexagonal-close-packed (hcp) constituents due to inadequate slip systems and consequently prominent shear banding. Here, we propose a design strategy that counterintuitively tolerates the bands with localized strains, i.e. the shear banded laminar (SBL) structure, which promotes 〈c + a〉 dislocation activation in hcp metals and renders unprecedented strengthductility combination in hcp-metal-based composites fabricated by accumulative roll bonding (ARB). The SBL structure is characterized with one soft hcp metal constrained by adjacent hard metal in which dislocations have been accumulated near the bimetal interfaces. High-energy X-ray diffraction astonishingly reveals that more than 90% of dislocations are non-basal in Ti layers of the SBL Ti/Nb composite processed by eight ARB cycles. Moreover, 〈c + a〉 dislocations occupy a high fraction of ∼30%, promoting further 〈c + a〉 cross slip. The unique stress field tailored by both shear banding and heterophase interface-mediated deformation accommodation triggers important 〈c + a〉 slip. This SBL design is of significance for developing hcp-based laminates and other heterostructured materials with high performances.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Nyckelord
- Shear band; Laminated metallic composites; Ductility; High-energy X-ray diffraction; Dislocation slip
Publikations- och innehållstyp
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- art (ämneskategori)
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Jiang, Shuang
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Peng, Ru
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Mathis, Kristian
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Yan, Hai-Le
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Farkas, Gergely
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Hegedues, Zoltan
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visa fler...
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Lienert, Ulrich
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Moverare, Johan, ...
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Zhao, Xiang
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Zuo, Liang
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Jia, Nan
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Wang, Yan-Dong
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visa färre...
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