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The Effect of the Artificial Aging on the Precipitation Kinetic in the Al-Mg-Si Alloy
I. Hamdi1 and Z. Boumerzoug2
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DOI:10.17265/2159-5348/2016.06.006
1. Department of Chemical Industry, University of Biskra, Biskra, Algeria 2. Department of Mechanical Engineering, University of Biskra, Biskra, Algeria
In this study, the effect of the artificial aging on the kinetics of the precipitation processes in the Al-Mg-Si alloy was investigated by differential scanning calorimetry and hardness examinations. This investigation revealed that the artificial aging has a positive effect on the precipitation kinetic. The activation energy of the precipitation process was calculated using Kissinger model. The result of this study showed a change in hardness values and in the activation energy for all precipitated phases. The hardness has high values at the higher aging temperature. The activation energy of the metastable phase β″ is determined as 41.55, which indicates that the formation of this phase is uncomplicated during artificial aging.
Al-Mg-Si, precipitation, β″, kinetic, DSC.