Erweiterung der numerischen Schweisssimulation zur Untersuchung metallkundlicher Fragestellungen

The examination of metal science questions in fusion welding using the numerical simulation is only successful, if the capabilities of commercial finite element programs are extended. Besides special modeling strategies new approaches for the consideration of the convective energy transport in the weld pool and the occurring microstructural changes are needed, which are individually fitted to the considered welding procedure and material. The largest difficulty lies in the missing mechanical material properties which are the basis for a successful numerical simulation. The presented work shows approaches for the solution for a variety of these problems.