Selective laser melting is a powder based additive manufacturing process where the metallic powder particles are melted by a high power laser beam. Different types of stainless steel powders made by gas and water atomization were analyzed before processing, in particular regarding their particle size distributions and morphology. Particle analysis was carried out using laser diffraction technologies and digital image analysis. A suitable designed experiment has been carried out and the specimen density has been measured and linked to the properties of the powders. Eventually the possibility to reach high density specimen by adjusting process parameters is discussed.

Densification mechanism for different types of stainless steel powders in Selective Laser Melting

CACACE, STEFANIA;DEMIR, ALI GOKHAN;SEMERARO, QUIRICO
2016

Abstract

Selective laser melting is a powder based additive manufacturing process where the metallic powder particles are melted by a high power laser beam. Different types of stainless steel powders made by gas and water atomization were analyzed before processing, in particular regarding their particle size distributions and morphology. Particle analysis was carried out using laser diffraction technologies and digital image analysis. A suitable designed experiment has been carried out and the specimen density has been measured and linked to the properties of the powders. Eventually the possibility to reach high density specimen by adjusting process parameters is discussed.
Proceedings of the 10th CIRP Conference on Intelligent Computation in Manufacturing Engineering
Selective Laser Melting; Stainless steel powder; Densification
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1019045
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