Authors:
Daniel Rommel (1), Christopher Schunk (1), Christoph Wielenberg (2), Frank Palm (3)
1- Colibrium Additive – a GE Aerospace company, Germany
2- Premium AEROTEC, Germany
3- Airbus, Germany
Abstract:
A next generation Al-Sc-alloy (Scancromal® (Al-Cr-Sc-Zr)) was printed using L-PBF technology. Compared to the more familiar Scalmalloy® (Al-Mg-Sc-Zr-Mn) the new material concept Scancromal® offers several advantages regarding process stability. Focus of the investigation was to explore the potential of such tailored alloy regarding maximum productivity utilizing increased layer thickness and laser power. Processing windows for two build layer thicknesses: 50 and 100 µm and two laser powers: 370 and 740 W were explored in order to identify parameter combinations to create dense (high strength & ductile) material and at the same time achieving highest build rates. The most promising combinations were down selected to print additional samples for microstructural and mechanical characterization. Samples were analyzed in “as printed” and heat-treated states to enable conclusions regarding processing parameters and resulting microstructure in addition to mechanical properties. Therefore, tensile properties were evaluated at room and elevated temperature.
DOI:
https://doi.org/10.59499/EP246278426
