Despite the emerging research, it is still troublesome to control the defect formation in selective laser melted parts. In this paper, a mechano-thermo-fluid dynamical FEM model at meso-scale was proposed. The model calculates and predicts the volume and dimensions of lack-of-fusion (LOF) defects according to the applied process parameters. The numerical model was validated with experimentally assessed volume of lack-of-fusion defects and melt pool dimensions. Results shown the lowest volume of LOF defects (0.41%) in specimen produced with 275 W and scanning speed of 400 mm/s. Laser power was determined as a parameter majorly impacting the volume and dimensions of LOF in selective laser melted parts.

Numerical prediction of lack-of-fusion defects in selective laser melted AlSi10Mg alloy / Morvayova, A.; Contuzzi, N.; Casalino, G.. - In: MATERIALS SCIENCE AND TECHNOLOGY. - ISSN 0267-0836. - ELETTRONICO. - 39:16(2023), pp. 2334-2340. [10.1080/02670836.2023.2198889]

Numerical prediction of lack-of-fusion defects in selective laser melted AlSi10Mg alloy

Contuzzi N.
Writing – Review & Editing
;
Casalino G.
Writing – Review & Editing
2023-01-01

Abstract

Despite the emerging research, it is still troublesome to control the defect formation in selective laser melted parts. In this paper, a mechano-thermo-fluid dynamical FEM model at meso-scale was proposed. The model calculates and predicts the volume and dimensions of lack-of-fusion (LOF) defects according to the applied process parameters. The numerical model was validated with experimentally assessed volume of lack-of-fusion defects and melt pool dimensions. Results shown the lowest volume of LOF defects (0.41%) in specimen produced with 275 W and scanning speed of 400 mm/s. Laser power was determined as a parameter majorly impacting the volume and dimensions of LOF in selective laser melted parts.
2023
Numerical prediction of lack-of-fusion defects in selective laser melted AlSi10Mg alloy / Morvayova, A.; Contuzzi, N.; Casalino, G.. - In: MATERIALS SCIENCE AND TECHNOLOGY. - ISSN 0267-0836. - ELETTRONICO. - 39:16(2023), pp. 2334-2340. [10.1080/02670836.2023.2198889]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/253400
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