Igor Kovacevic, University of Nova Gorica, Nova Gorica, Slovenia
The solid-solid phase transformations during the homogenisation of aluminium alloys are modelled and simulated by the phase-ﬁeld model. A comparison of the phase-ﬁeld model with the two-domain approach for the validation of both models is performed in one-dimensional geometry. Special attention is paid to the connection of the physical models with thermodynamic database. The spheroidisation kinetics of elongated Si-particle is estimate by the phase-ﬁeld model. The model is applied on the dissolution kinetics the interdendritic, artificial eutectic phase in the aluminium matrix in Al-C alloy. The Gibbs free energy of homogenous eutectic phase is calculated a the heterogeneous mixture of eutectic phases present. The solution procedure based on the local collocation with radial basis functions on the r-adaptive node arrangement for the solution of governing equations of the phase-ﬁeld model is derived.