Megahed, SandraKrämer, Karl MichaelKontermann, ChristianHeinze, ChristophUdoh, AnnettWeihe, StefanOechsner, Matthias2023-11-142023-11-1420231996-19441871029570http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-137683http://elib.uni-stuttgart.de/handle/11682/13768http://dx.doi.org/10.18419/opus-13749Components manufactured with Metal Laser Powder Bed Fusion (PBF-LB/M) are built in a layerwise fashion. The PBF-LB/M build orientation affects grain morphology and orientation. Depending on the build orientation, microstructures from equiaxed to textured grains can develop. In the case of a textured microstructure, a clear anisotropy of the mechanical properties affecting short- and long-term mechanical properties can be observed, which must be considered in the component design. Within the scope of this study, the IN738LC tensile and creep properties of PBF-LB/M samples manufactured in 0° (perpendicular to build direction), 45° and 90° (parallel to build direction) build orientations were investigated. While the hot tensile results (at 850 °C) are as expected, where the tensile properties of the 45° build orientation lay between those of 0° and 90°, the creep results (performed at 850 °C and 200 MPa) of the 45° build orientation show the least time to rupture. This study discusses the microstructural reasoning behind the peculiar creep behavior of 45° oriented IN738LC samples and correlates the results to heat-treated microstructures and the solidification conditions of the PBF-LB/M process itself.eninfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/4.0/620670article2023-09-07