Mechanism of large strain accommodation assisted by shear localization in a precipitation-hardened Cu–Be alloy - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Materials Science and Engineering: A Année : 2021

Mechanism of large strain accommodation assisted by shear localization in a precipitation-hardened Cu–Be alloy

Ivan Lomakin
Alfiia Nigmatullina
Xavier Sauvage

Résumé

The influence of the structural state on deformation mechanisms under large strains was investigated in a Cu-2 wt.% Be alloy. Torque evolutions during straining exhibit serrations typical of structural relaxations in the precipitation-hardened alloy, but not in the solid solution state. Microstructure characterization revealed that homogeneous deformation of the solid solution led to strong grain size reduction (20 nm), while localization occurred in the precipitated state with numerous shear bands. The role of CuBe precipitates on hindering dislocation glide and the resulting shear localization under large strain is discussed.
Fichier principal
Vignette du fichier
CuBe HPT MSEA 2021.pdf (3.3 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03364713 , version 1 (04-10-2021)

Identifiants

Citer

Ivan Lomakin, Alfiia Nigmatullina, Xavier Sauvage. Mechanism of large strain accommodation assisted by shear localization in a precipitation-hardened Cu–Be alloy. Materials Science and Engineering: A, 2021, 823, pp.141760. ⟨10.1016/j.msea.2021.141760⟩. ⟨hal-03364713⟩
18 Consultations
65 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More