Due to the energy saving trend of downsizing automotive engines, the performance of the turbocharger is getting more and more importance. The great advantage of implementation of TiAl as turbine-wheel material is the low density of about 4,2 g/cm3. Due to this fact, the reaction time of the turbocharger can be reduced in comparison to turbine wheels made of Ni-base alloys with a density of ca. 8 g/cm3. So the turbo-lag at low revolutions per minute can be reduced or even prevented. A turbocharger wheel is produced by means of die-forging of a cylindrical cast and hot-isostatically pressed pre-material. After the forging process, the final contour of the wheel is machined. The motivation of this thesis was the material characterisation before and after the property-optimized die-forging process as well as after forging with parameters deviating from the optimized die-forging process. The basic characterisation was performed by means of scanning electron microscopy, phase fraction analysis based on quantitative metallography and X-ray diffraction, measurements of thermo-physical properties, hardness tests, tensile tests and creep tests.