The Natural Aging Effect on the Activation Energy of the Precipitation Processes in the Al-Mg-Si Alloy

Abstract:

The precipitation sequence of an Al-Mg-Si alloy depends on many parameters. In this study the natural aging effect on the activation energy of the precipitation sequence in the Al-Mg-Si alloy have been investigated by differential scanning calorimetry (DSC). The precipitation sequence of an Al-Mg-Si alloy has been established. The activation energy of the precipitation process was calculated using Kissinger model. The results obtained using this method showed a change in the activation energy for all precipitated phases. The activation energy of the metastable phases (β″ and β′) and the stable phase β formation in the Al-Mg-Si alloy aged at room temperature have been determined.

• Periodical: Key Engineering Materials (Volume 723)
• Pages: 27-31
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.723.27
• Online since: December 2016
• Authors: Ines Hamdi, Zakaria Boumerzoug*
• Keywords: Activation Energy, Al-Mg-Si, DSC, Natural Aging, Precipitation

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