Title :

Recrystallization and grain growth activation energies in a hybrid magnesium material fabricated by high-pressure torsion

Author(s) :

Azzeddine, Hiba [Auteur]
University of M'sila / Université Mohamed Boudiaf - M'sila [Uni M'sila]
Avettand-Fènoël, Marie-Noëlle [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Bazarnik, Piotr [Auteur]
Warsaw University of Technology [Warsaw]
Baudin, Thierry [Auteur]
Institut de Chimie Moléculaire et des Matériaux d'Orsay [ICMMO]
Huang, Yi [Auteur]
University of Southampton
Bournemouth University [Poole] [BU]
Langdon, Terence G. [Auteur]
University of Southampton

Journal title :

Thermochimica Acta

Abbreviated title :

Thermochimica Acta

Pages :

179805

Publisher :

Elsevier

Publication date :

2024-06-19

ISSN :

0040-6031

HAL domain(s) :

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

English abstract : [en]

The recrystallization and grain growth activation energies of the hybrid AZ31/Mg-0.6Gd (wt.%) alloy were calculated using differential scanning calorimetry analyses and scanning electron microscopy, respectively, after ...
Show more >The recrystallization and grain growth activation energies of the hybrid AZ31/Mg-0.6Gd (wt.%) alloy were calculated using differential scanning calorimetry analyses and scanning electron microscopy, respectively, after fabricating by high-pressure torsion up to 20 turns and then subjecting to an isochronal annealing treatment from 423 to 723 K for 1 h. The DSC results show one exothermic peak belonging to the static recrystallization of the AZ31 region with an activation energy of 112 ± 10 kJ/mol. The grain growth kinetics for the AZ31 and Mg-0.6Gd regions were described by the Arrhenius equation. The calculation with a grain growth exponent equal to 4 gave values for the activation energies in both the AZ31 (146.2 ± 8.4 kJ/mol) and Mg-0.6Gd (90.9 ± 13.5 kJ/mol) regions. The present results reveal the heterogeneity of the thermal stability of the AZ31/Mg-0.6Gd hybrid material.Show less >

Language :

Anglais

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) :

Métallurgie Physique et Génie des Matériaux

Submission date :

2024-06-21T15:39:42Z
2024-06-24T13:16:45Z