Atomic force microscopy and transmission electron microscopy identification of deformation twinning in the Cr2AlC MAX phase - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Acta Materialia Année : 2024

Atomic force microscopy and transmission electron microscopy identification of deformation twinning in the Cr2AlC MAX phase

Résumé

Elementary deformation mechanisms have been investigated in a single-crystalline Cr2AlC MAX phase. Plastic deformation has been induced at room temperature by spherical nanoindentation, with a crystal orientation chosen to minimize basal slip and to promote local crystal reorientation. The combination of Atomic Force Microscopy (AFM) surface observation, Transmission Electron Microscopy (TEM) characterization and Auto- mated Crystal Orientation Mapping (ACOM) in a same region has provided a full 3D characterization of the deformation microstructure. Localized and isolated deformation twins have been identified below the indents. The whole microstructure consists in interactions between dislocations and {1124} twin variants. The TEM analysis also revealed activation of a 1 3 〈1120〉{1103} slip system never reported before in a MAX phase.
Fichier non déposé

Dates et versions

hal-04562546 , version 1 (29-04-2024)

Identifiants

Citer

Salomé Parent, Anne Joulain, Hadi Bahsoun, Gilles Renou, Thierry Ouisse, et al.. Atomic force microscopy and transmission electron microscopy identification of deformation twinning in the Cr2AlC MAX phase. Acta Materialia, 2024, 270, pp.119836. ⟨10.1016/j.actamat.2024.119836⟩. ⟨hal-04562546⟩
0 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More