The current thesis deals with the investigation of the grain boundary cavitation in polycrystalline aggregates. The main idea is to perform the simulation with just some micromechanisms directly influencing the cavitation process. These are the power law creep in the grain interior, the grain boundary sliding and the growth of grain boundary cavities. This assumption is taken on the one hand due to complexity of the mechanisms taking place in real polycrystals during creep and on the other hand in order to investigate the pure contribution of chosenmechanisms.weiterlesen