Modelling differential scanning calorimetry curves of precipitation in Al-Cu-Mg

SCRIPTA MATERIALIA

卷:62

Article

Driver, J. H.¹ 

[1] Ecole Natl Super Mines, Mat Ctr, F-42023 St Etienne, France

关键词: Differential scanning calorimetry (DSC);    Aluminium alloys;    Phase transformation kinetics;    Simulation;    Thermodynamics;   

DOI  :  10.1016/j.scriptamat.2009.12.009

来源: Elsevier

【 摘 要 】

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. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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