Dresden 2009 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 11: Growth

MM 11.3: Vortrag

Montag, 23. März 2009, 15:15–15:30, IFW D

Phase-field simulations in peritectic system — •guillaume Boussinot, efim Brener, and dmitri Temkin — IFF-th.3, Forshungszentrum Juelich, Germany

We use a multi-phase-field model, to study peritectic systems in the case of isothermal processes (where the temperature T of the sample is a given). The latter provide the limit case of directional transformations (where the sample is pulled in a temperature gradient) when the temperature gradient vanishes. When T<Tp, we have a (delta+L-> delta+gamma+L) transformation, where delta is called primary solid phase and gamma is the peritectic solid phase (and L is the liquid). When T>Tp, we obtain a (gamma+L -> delta+L) transformation occuring via a liquid film migration process.