Materials, e.g. metallic alloys, are often inhomogeneous inside: they look like a mosaic of different elements, the so-called phases. The characteristic features of individual phases add up to macroscopic effective properties of the material. The geometric arrangement, shape and size of individual phases, i.e. the microstructure of the material, play a decisive role. To fathom this connection experimentally is a great challenge. Computer simulations can support or even replace the experiments.
Federal Ministry of Education and Research