DETERMINING MATERIAL DATA FOR THE SIMULAT ION OF MICROSTRUCTURES

Typical experimental methods for determining model parameters are feat ured, as well as accompanying problems, Starting out from the often er ratically, easily accessible material parameters, attention is drawn t o the necessity of inferring such data precisely and as realistically as possible. To create models for the description of geometrically com plicated hot-deformed products that have non-uniform properties over t heir cross-section it is necessary to use finite-element methods. Such finite-element model simulations require specific material data. Look ed at are essential questions which are relevant for achieving a good correlation between the laboratory result and the real product propert ies. The most important laboratory techniques for inferring data on st rengthening and softening, phase transformation and texture are presen ted. Within the scope of their plant-related limits and appropriately applied boundary conditions, laboratory investigation techniques repre sent suitable methods for determining material data for mathematical s imulations, irrespective of the different methods of measurement and s pecimen sizes.