The investigation carried out on novel steel powders based on the Fe-C-Cr-Mo alloy system to be processed by Laser-Powder Bed Fusion is described. Two powder batches have been studied, considering of a gas atomized version and a variant of it, with a modified chemistry, produced by water atomization and post-treatment. The materials have been characterized after LPBF processing to highlight the as built microstructure and properties as a result of the different powder atomization processes. The results showed that the water atomized variant of the steel powder possesses good processability and performances comparable to the gas atomized alloy.

L-PBF Processing of Steel Powders Produced by Gas and Water Atomization

M. Abdelwahed;R. Casati;M. Vedani
2021-01-01

Abstract

The investigation carried out on novel steel powders based on the Fe-C-Cr-Mo alloy system to be processed by Laser-Powder Bed Fusion is described. Two powder batches have been studied, considering of a gas atomized version and a variant of it, with a modified chemistry, produced by water atomization and post-treatment. The materials have been characterized after LPBF processing to highlight the as built microstructure and properties as a result of the different powder atomization processes. The results showed that the water atomized variant of the steel powder possesses good processability and performances comparable to the gas atomized alloy.
2021
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1158938
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