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Modeling of Precipitation Coupled with Thermodynamic Calculations

Abstract : A precipitation model is developed based on three physical mechanisms, ie nucleation, growth and coarsening of the precipitates. The model follows the particle size distribution by using a finite volume method. Inputs of thermodynamic data are required, such as the driving force for nucleation and equilibrium concentrations. An ideal dilute solution, an ideal solution and a model fully coupled with the thermodynamic calculation software Thermo-Calc®[l] are used to describe the Gibbs energy of the different phases. The influence of using these different thermodynamic approximation on the prediction of the precipitation model is studied.
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Mickael Serriere, Charles-André Gandin, Elisabeth Gautier, Pierre Archambault, Moukrane Dehmas. Modeling of Precipitation Coupled with Thermodynamic Calculations. Materials Science Forum, Trans Tech Publications Inc., 2002, Aluminium Alloys 2002 - ICAA8, 396-402 (2), pp.747 - 752. ⟨10.4028/⟩. ⟨hal-01564423⟩



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