Regensburg 2010 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 26: Poster Session

MM 26.40: Poster

Dienstag, 23. März 2010, 14:45–16:30, Poster C

Phase-field simulation using the Calphad method — •Sebastian Schulz, Abhik Choudhury, and Britta Nestler — Institute of Materials and Processes, Karlsruhe, Germany

The strength of the phase-field method to simulate material alloy systems has been demonstrated over the years. This requires the knowledge of the Gibbs-free energy of the phases involved in the transition. The Calphad method involves the calculation of phase diagrams of multi-component systems, using datasets generated through comparative studies with experiments and density functional theory calculations. This methodology has gained popularity for use in simulations and experimental studies, as this includes a creditable collection of the Gibbs-free energies of a number of material systems. Databases are available for most binary systems, and a number of ternary systems of technical interest. In the present study, we build the methodology for the direct use of the databases in the simulation of material alloys, using the phase-field method. In particular, we investigate the Al-Si system, given the wide range of microstructures possible and its significance in the industry.