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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

1873-4669

Svazek periodika

1038

Číslo periodika v rámci svazku

neuveden

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

11

Strana od-do

182632

Kód UT WoS článku

001544068500007

EID výsledku v databázi Scopus

2-s2.0-105011987358