DSC analysis of dissolution reaction in ...
Document type :
Article dans une revue scientifique
Permalink :
Title :
DSC analysis of dissolution reaction in an as-cast and HPT-processed Mg-Gd alloy
Author(s) :
Hanna, Abdelkader [Auteur]
Research Center in Industrial Technologies [CRIT]
Azzeddine, Hiba [Auteur]
Avettand-Fènoël, Marie-Noëlle [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Baudin, Thierry [Auteur]
Université Paris-Saclay
Huang, Yi [Auteur]
University of Southampton
Langdon, Terence G. [Auteur]
University of Southampton
Research Center in Industrial Technologies [CRIT]
Azzeddine, Hiba [Auteur]
Avettand-Fènoël, Marie-Noëlle [Auteur]

Unité Matériaux et Transformations (UMET) - UMR 8207
Baudin, Thierry [Auteur]
Université Paris-Saclay
Huang, Yi [Auteur]
University of Southampton
Langdon, Terence G. [Auteur]
University of Southampton
Journal title :
Materials Letters
Abbreviated title :
Materials Letters
Volume number :
376
Pages :
137293
Publisher :
Elsevier BV
Publication date :
2024-09
ISSN :
0167-577X
HAL domain(s) :
Chimie/Matériaux
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
English abstract : [en]
The dissolution reaction kinetics were determined by differential scanning calorimetry (DSC) analysis for Mg-0.6Gd (wt.%) in an as-cast condition and after processing by high-pressure torsion (HPT) at room temperature for ...
Show more >The dissolution reaction kinetics were determined by differential scanning calorimetry (DSC) analysis for Mg-0.6Gd (wt.%) in an as-cast condition and after processing by high-pressure torsion (HPT) at room temperature for 20 turns. For the as-cast condition, the dissolution temperature was in the range of 634–658 K with an activation energy of 135 ± 9 kJ/mol. After HPT, the range of dissolution temperature decreased to 601–633 K, with a lower activation energy of 118 ± 10 kJ/mol. In both conditions, the Avrami and growth exponents are around 1.5, which suggests that the dissolved precipitates exhibit polyhedron-like morphology and that the dissolution process is dominated by bulk dissolution with a constant rate controlled by diffusion.Show less >
Show more >The dissolution reaction kinetics were determined by differential scanning calorimetry (DSC) analysis for Mg-0.6Gd (wt.%) in an as-cast condition and after processing by high-pressure torsion (HPT) at room temperature for 20 turns. For the as-cast condition, the dissolution temperature was in the range of 634–658 K with an activation energy of 135 ± 9 kJ/mol. After HPT, the range of dissolution temperature decreased to 601–633 K, with a lower activation energy of 118 ± 10 kJ/mol. In both conditions, the Avrami and growth exponents are around 1.5, which suggests that the dissolved precipitates exhibit polyhedron-like morphology and that the dissolution process is dominated by bulk dissolution with a constant rate controlled by diffusion.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
Université de Lille
CNRS
INRAE
ENSCL
CNRS
INRAE
ENSCL
Collections :
Research team(s) :
Métallurgie Physique et Génie des Matériaux
Submission date :
2024-09-05T11:11:48Z
2024-09-06T07:39:12Z
2024-09-06T07:39:12Z