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, Alexandra; Contuzzi, Nicola; Casalino, Giuseppe. - In: MATERIALS SCIENCE AND TECHNOLOGY. - ISSN 0267-0836. - STAMPA. - 39:16(2023), pp. 2334-2340. [10.1080/02670836.2023.2198889]
Numerical prediction of lack-of-fusion defects in selective laser melted AlSi10Mg alloy
Morvayova, Alexandra;Contuzzi, NicolaWriting – Review & Editing
;Casalino, GiuseppeWriting – 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.File | Dimensione | Formato | |
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