Modelling differential scanning calorimetry curves of precipitation in Al-Cu-Mg
Résumé
The heat flux during a differential scanning calorimetry (DSC) experiment of a precipitation reaction is expressed analytically as a function of the interfacial energy, the solid solution composition and the precipitate fraction. Using a physically based model of nucleation, growth and dissolution, the respective contributions of these terms are compared for the case of S phase precipitation in AA2024 (Al-4% Cu-2% Mg). Good overall agreement is obtained for the experimental and simulated DSC curves if the interfacial energy is tuned correctly.
Domaines
MatériauxOrigine | Fichiers produits par l'(les) auteur(s) |
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