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SYMS: Symposium Modern developments in multiphysics materials simulations

SYMS 1: Modern developments in multiphysics materials simulations I

SYMS 1.4: Invited Talk

Thursday, February 28, 2008, 15:30–16:00, A 151

Phase-field simulation of microstructure evolution: Linking atomistics to processes and properties — •Ingo Steinbach — RWTH-Aachen, Access e.V.

Properties of materials are determined by their atomic lattice structure and their microstructure which comprises the arrangement of microscopic defects and the mesoscopic distribution of phases and grains. This microstructure is determined by the history of the production process and may change under service conditions. The talk will focus on the phase-field method for the simulation of microstructure evolution in complex materials. Atomistic features determine the magnitude and anisotropy of important model parameter like interfacial energies and mobilities. The production process determines the boundary conditions of the simulations. Properties are derived by homogenization procedures or using heuristic arguments. Examples will be presented from casting, heat treatment and - as an outlook - in service degradation.