Titanium aluminides attract increasing attention due to their good mechanical properties in combination with a low density about 4.0 g/cm3. Since titanium aluminides are hard to process alternative routes like additive manufacturing are investigated. Selective electron beam melting seems particularly suited due to vacuum conditions combined with very high processing temperatures and beam velocities. The high cooling rates of this process lead to a very fine microstructure, which is not fully understood up to now. The vacuum conditions in combination with the high temperature and the scanning strategy may lead to strong aluminum evaporation. This change of the composition causes a variation of the mechanical properties opening the opportunity to adjust local material properties in the part. Therefore, it is important to understand the correlation of the scanning strategies and the resulting materials properties. In this contribution different scanning strategies and their influence on the chemical composition and the mechanical properties of Ti-48Al-2Cr-2Nb are investigated. Especially the impact of the energy input, the scanning speed and the line offset is evaluated.
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