Miscible hetero-interface governed strengthening and toughening in laminated Ti/Zr composites: An in-situ neutron diffraction investigation

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10512181" target="_blank" >RIV/00216208:11320/25:10512181 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=kDJ5ZJB4Ew" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=kDJ5ZJB4Ew</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2025.182632" target="_blank" >10.1016/j.jallcom.2025.182632</a>

Result language

angličtina

Original language name

Miscible hetero-interface governed strengthening and toughening in laminated Ti/Zr composites: An in-situ neutron diffraction investigation

Original language description

Hetero-interfaces play a crucial role in the deformation behavior and the corresponding mechanical properties of laminated metallic composites. Here, laminated Ti/Zr composites were designed and processed by accumulative roll bonding (ARB) to investigate the role of the miscible/diffusive hetero-interfaces. At the starting of the ARB process, strain localization in terms of shear bands appears, and become predominant with the increasing ARB cycles. The Ti/Zr composites exhibit a significant increment in strength as the roll bonding proceeds, whilst the ductility is not sacrificed substantially. In-situ neutron diffraction during uniaxial tensile loading indicates that the Zr layers are subjected to much higher stress than the Ti layers. The strength of the composite deviates from the rule-of-mixtures, due to the existence of diffusion layers near the hetero-interfaces. These diffusion layers play a dominant strengthening role in the bulk Ti/Zr composites. With the miscible hetero-interfaces, the interactions between the dislocations and the interfaces are weakened, resulting in a marginal role of the heterointerfaces induced strengthening. The load transfer promoted by shear bands in the composites with higher ARB cycles can improve the deformation compatibility between the constituent metals, resulting in satisfactory ductility. These results elucidate the divergent roles of the miscible hetero-interfaces compared to the immiscible counterparts, and provide a new strategy to design high performance laminated metallic composites by artificial interface tailoring.

Czech name

—

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

—

OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

1873-4669

Volume of the periodical

1038

Issue of the periodical within the volume

neuveden

Country of publishing house

CH - SWITZERLAND

Number of pages

11

Pages from-to

182632

UT code for WoS article

001544068500007

EID of the result in the Scopus database

2-s2.0-105011987358