A phase-field model for multi-component and multi-phase systems
نویسنده
چکیده
An alternative phase-field model is presented for the simulation of microstructure evolution in polycrystalline materials existing of multiple phases and components. The model is able to treat concurrently phase transformations, diffusion controlled coarsening (Ostwald ripening) and grain growth. The equilibrium phase fractions and compositions are introduced using appropriate thermodynamic Gibbs energy expressions. Furthermore, the model allows to specify the energy and mobility, and their anisotropy, for each interface individually and the diffusion properties of the different phases. Simulation results are discussed for the coarsening of a simplified Cu/CuSn solder joint with Cu6Sn5-precipitates.
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