Dresden 2006 – wissenschaftliches Programm

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MM: Metall- und Materialphysik

MM 31: Symposium Materials Modelling I

MM 31.2: Vortrag

Donnerstag, 30. März 2006, 10:45–11:00, IFW A

A Multi-lattice kinetic Monte Carlo study on the activation enthalpies for the interface mobility and interphase boundary diffusion in a massive transformation in iron — •Cornelis Bos, Ferdinand Sommer, and Eric-Jan Mittemeijer — Max Planck Institute for Metals Research, Heisenbergstrasse 3, D-70569 Stuttgart

Multi-lattice kinetic Monte Carlo simulations of lateral growth of ferrite in a massive austenite to ferrite transformation in iron were performed with a variable jump specific activation energy taking the local surroundings of the jumping atoms into account. From the simulations the activation enthalpy for the interface mobility and the migration activation enthalpy for interphase boundary diffusion were determined. It is shown that, depending on the interface structure the interface migration activation enthalpy can be larger or smaller than the migration activation enthalpy for boundary diffusion.