Title :

Experimental evidence of zonal dislocations in the Ti2AlC MAX phase

Author(s) :

Mussi, Alexandre [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Henzelmeier, Adrien [Auteur]
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
Weidner, Timmo [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Novelli, Marc [Auteur]
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
Wenbo, Yu [Auteur]
Beijing Jiaotong University [BJTU]
Cuvilly, Fabien [Auteur]
Groupe de physique des matériaux [GPM]
Grosdidier, Thierry [Auteur]
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
Guitton, Antoine [Auteur]
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]

Journal title :

Materials Characterization

Abbreviated title :

Materials Characterization

Volume number :

200

Pages :

112882

Publisher :

Elsevier BV

Publication date :

2023-06

ISSN :

1044-5803

English keyword(s) :

MAX phases
Severe plastic deformation
Surface mechanical attrition treatment
Transmission electron microscopy
Dislocations

HAL domain(s) :

Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Planète et Univers [physics]/Sciences de la Terre

English abstract : [en]

The dislocation configurations of a Ti2AlC-MAX phase deformed under severe plastic deformation by surface mechanical attrition treatment have been analyzed by transmission electron microscopy. Results show that the ...
Show more >The dislocation configurations of a Ti2AlC-MAX phase deformed under severe plastic deformation by surface mechanical attrition treatment have been analyzed by transmission electron microscopy. Results show that the microstructure of the deformed Ti2AlC sample is composed of numerous ⟨a⟩-dislocations, which interact with each other notably with dipolar configurations. In addition, we report here ⟨a⟩-dislocation dissociations in the basal plane with a dissociation distance of approximately 20 nm, following the reaction 1/3 ⟨21 ̅1 ̅0⟩⇔1/3 ⟨11 ̅00⟩+1/3 ⟨101 ̅0⟩. Finally, evidence of zonal dislocations is reported. These original results are discussed in the context of the fundamental deformation mechanisms of nanolayered ternary alloys.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Plasticité

Submission date :

2023-05-03T10:13:48Z
2023-05-03T10:48:16Z
2023-05-04T09:16:44Z