Introduction to the TUM Chair of Materials Engineering of Additive Manufacturing – Challenges and research on metallurgy of joining and additive manufacturing

Most of the challenges in joining and additive manufacturing of metallic structures are related to metallurgical phenomena or inadequate processing routes. Within this talk, the core areas of research at the chair of materials engineering of additive manufacturing will be presented. Targeting a solid understanding of metallurgical phenomena, influenced by various processing variants allows the derivation of structure-process-property relationships, which can then in turn result in tailored materials and processing. In order to getting a comprehensive understanding of materials structure and processing response, most advanced experimental methods are utilised. This includes for example in-situ synchrotron X-ray diffraction or tomography, high temperature microscopy or thermo-physical material simulation. To foster a better understanding of complex relationships, currently, also data mining and implementation of AI-driven approaches are employed. Exemplarily, this will be shown for creep resistant martensitic steels, the combination of welding and forming of steel structures, dissimilar metal welds between aluminium and copper, the diffusion bonding of molybdenum and tungsten and additive manufacturing and post processing of aluminium alloys.