Authors:
Pelle Mellin (Swerim AB, Sweden),
Emil Strandh (Swerim AB, Sweden),
Markus Uhlirsch (Swerim AB, Sweden),
Cameron Blackwell (The MTC, United Kingdom),
Martina Meisnar (ESA European Space Agency, United Kingdom),
Laurent Pambaguian (ESA European Space Agency, Netherlands)
Abstract:
Herein we describe testing of four AlSi10Mg L-PBF powders, sourced from different suppliers, using an off-the-shelf AB4120 automatic film applicator from TQC Sheen. With a 3560|2 gap applicator from Elcometer we produced 150 µm thick layer strips, at 150 mm|s. 3D-scanning confirmed near-target thicknesses, and near-anticipated layer volume.The powders were ranked based on their layer density. The same ranking was obtained for apparent density and tap density. In turn, these densities correlated with the overall sphericity of the powders. 3D-scanning (using a GOM ATOS Core 200) can highlight layer defects such as waves, skips and streaks. These defects were found in greater numbers for the worst powder that contained more oversize and irregularly shaped particles.
DOI:
https://doi.org/10.59499/WP225366782