Shear banding-induced (c plus a) slip enables unprecedented strength-ductility combination of laminated metallic composites

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F22%3A00557389" target="_blank" >RIV/61389005:_____/22:00557389 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/22:10454122

Result on the web

<a href="https://doi.org/10.1016/j.jmst.2021.09.032" target="_blank" >https://doi.org/10.1016/j.jmst.2021.09.032</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jmst.2021.09.032" target="_blank" >10.1016/j.jmst.2021.09.032</a>

Result language

angličtina

Original language name

Shear banding-induced (c plus a) slip enables unprecedented strength-ductility combination of laminated metallic composites

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Materials Science & Technology

ISSN

1005-0302

e-ISSN

—

Volume of the periodical

110

Issue of the periodical within the volume

MAY

Country of publishing house

CN - CHINA

Number of pages

9

Pages from-to

260-268

UT code for WoS article

000788137200002

EID of the result in the Scopus database

2-s2.0-85120416204