Androgynous {10-12} twin in zinc

Merkel, Sébastien; Hilairet, Nadege; Wang, Yanbin; Guignard, Jérémy; Tomé, Carlos N.

Type de document :

Article dans une revue scientifique: Article original

DOI :

10.1103/physrevmaterials.8.063603

URL permanente :

http://hdl.handle.net/20.500.12210/115060

Titre :

Androgynous {10-12} twin in zinc

Auteur(s) :

Merkel, Sébastien [Auteur]

Unité Matériaux et Transformations (UMET) - UMR 8207
Hilairet, Nadege [Auteur]

Unité Matériaux et Transformations - UMR 8207 [UMET]
Wang, Yanbin [Auteur]
University of Chicago
Guignard, Jérémy [Auteur]
Tomé, Carlos N. [Auteur]

Titre de la revue :

Physical Review Materials

Nom court de la revue :

Phys. Rev. Materials

Numéro :

Pagination :

063603

Éditeur :

American Physical Society (APS)

Date de publication :

2024-06-10

ISSN :

2475-9953

Discipline(s) HAL :

Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]

Résumé en anglais : [en]

Under ambient conditions, Zn is a hexagonal metal with a large c/a ratio of 1.856. Plastic deformation is predominantly accommodated by basal ⟨a⟩ slip and compression twins on the {10-12} planes. Increasing hydrostatic ...
Lire la suite >Under ambient conditions, Zn is a hexagonal metal with a large c/a ratio of 1.856. Plastic deformation is predominantly accommodated by basal ⟨a⟩ slip and compression twins on the {10-12} planes. Increasing hydrostatic pressure drastically reduces the c/a ratio of Zn and, when a critical threshold of c/a=√3 at about 10 GPa is crossed, the {10-12} twins are predicted to change from compressive to tensile in nature. What happens at the transition point, when c/a=√3, remains unknown. Here, we strain-cycle a textured polycrystalline sample of pure Zn at uniform hydrostatic pressures ranging between 2 and 17 GPa, over which the c/a ratio crosses the c/a=√3 compressive-tensile transition for {10-12} twins. During deformation, the state of the sample is monitored through x-ray diffraction to extract texture and internal strain evolution. By comparing the experimental results with the predictions of an elastoviscoplastic polycrystal simulation, we confirm the androgynous nature of {10-12} twin response at low and high pressures. When c/a=3, polycrystalline Zn does not display any evidence of twinning and its plastic behavior is controlled by mostly basal and pyramidal ⟨c+a⟩ slip activity, with a very small contribution of prismatic ⟨a⟩ slip. Evidence for the activity of other {10-1n} twinning modes, which have been suggested for Zn under high pressure, are not observed.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Références liée(s) :

http://dx.doi.org/10.57745/FOINIM

Projet Européen :

High Temperature Dynamics of Metals and the Earth’s Solid Inner Core

Établissement(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Matériaux Terrestres et Planétaires

Date de dépôt :

2024-06-11T06:41:20Z
2024-06-12T07:18:30Z

Fichiers

merkel2024prm.pdf
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Androgynous {10-12} twin in zinc
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Ce document est diffusé sous licence Attribution 3.0 United States

Numéro de version	Lien	Date de modification
2	20.500.12210/115060*	2024-06-12T07:13:56Z
1	20.500.12210/115060.1	2024-06-11T06:41:20Z

Androgynous {10-12} twin in zinc

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Androgynous {10-12} twin in zinc

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