Analysis of Building Platform Inhomogeneities in PBF-LB/M Process on Alloy 718
Additive Manufacturing (AM) processes, particularly PBF-LB/M, are considered advantageous due to their flexibility, which allows process engineers to design and fabricate intricate structures both in the prototyping and component manufacturing phases. It is well known that the behavior of the proces...
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MDPI AG
2025-04-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/15/7/4042 |
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| author | Niccolò Baldi Lokesh Chandrabalan Marco Manetti Alessandro Giorgetti Gabriele Arcidiacono Paolo Citti Marco Palladino |
| author_facet | Niccolò Baldi Lokesh Chandrabalan Marco Manetti Alessandro Giorgetti Gabriele Arcidiacono Paolo Citti Marco Palladino |
| author_sort | Niccolò Baldi |
| collection | DOAJ |
| description | Additive Manufacturing (AM) processes, particularly PBF-LB/M, are considered advantageous due to their flexibility, which allows process engineers to design and fabricate intricate structures both in the prototyping and component manufacturing phases. It is well known that the behavior of the process directly impacts the quality of the materials and thereby induces inhomogeneities on the powder bed on the building platform. Several parameters can be tuned to keep the process under control, getting rid of process uncertainty and distinguishing aspects of a specific machine model. Such behavior requires an extended analysis of the powder bed inhomogeneities and the definition of limits in the printing process. In this work, carried out on Alloy 718 specimens printed using an EOS M290 machine, the inhomogeneities of the melt pool stability, density, and material properties were investigated based on three main factors: the amount of area melted or fused, the gas flow speed setpoint, and the location on the building platform. The test results for Track Stability, melt-pool shape, and porosity analysis show that criticality occurs when more than 50% of the building platform is exposed. This can be partly fixed by raising the differential pressure value. |
| format | Article |
| id | doaj-art-8ceabd3be21f47f18f06cc54d1e7b475 |
| institution | OA Journals |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj-art-8ceabd3be21f47f18f06cc54d1e7b4752025-08-20T02:17:00ZengMDPI AGApplied Sciences2076-34172025-04-01157404210.3390/app15074042Analysis of Building Platform Inhomogeneities in PBF-LB/M Process on Alloy 718Niccolò Baldi0Lokesh Chandrabalan1Marco Manetti2Alessandro Giorgetti3Gabriele Arcidiacono4Paolo Citti5Marco Palladino6Department of Engineering Science, Guglielmo Marconi University, 00193 Rome, ItalyBaker Hughes—Nuovo Pignone, Via Felice Matteucci 2, 50127 Florence, ItalyBaker Hughes—Nuovo Pignone, Via Felice Matteucci 2, 50127 Florence, ItalyDepartment of Industrial, Electronic and Mechanical Engineering, Roma Tre University, 00146 Rome, ItalyDepartment of Engineering Science, Guglielmo Marconi University, 00193 Rome, ItalyDepartment of Engineering Science, Guglielmo Marconi University, 00193 Rome, ItalyBaker Hughes—Nuovo Pignone, Via Felice Matteucci 2, 50127 Florence, ItalyAdditive Manufacturing (AM) processes, particularly PBF-LB/M, are considered advantageous due to their flexibility, which allows process engineers to design and fabricate intricate structures both in the prototyping and component manufacturing phases. It is well known that the behavior of the process directly impacts the quality of the materials and thereby induces inhomogeneities on the powder bed on the building platform. Several parameters can be tuned to keep the process under control, getting rid of process uncertainty and distinguishing aspects of a specific machine model. Such behavior requires an extended analysis of the powder bed inhomogeneities and the definition of limits in the printing process. In this work, carried out on Alloy 718 specimens printed using an EOS M290 machine, the inhomogeneities of the melt pool stability, density, and material properties were investigated based on three main factors: the amount of area melted or fused, the gas flow speed setpoint, and the location on the building platform. The test results for Track Stability, melt-pool shape, and porosity analysis show that criticality occurs when more than 50% of the building platform is exposed. This can be partly fixed by raising the differential pressure value.https://www.mdpi.com/2076-3417/15/7/4042additive manufacturingPBF-LB/MAlloy 718building platformmelt-pool shapesingle track analysis |
| spellingShingle | Niccolò Baldi Lokesh Chandrabalan Marco Manetti Alessandro Giorgetti Gabriele Arcidiacono Paolo Citti Marco Palladino Analysis of Building Platform Inhomogeneities in PBF-LB/M Process on Alloy 718 Applied Sciences additive manufacturing PBF-LB/M Alloy 718 building platform melt-pool shape single track analysis |
| title | Analysis of Building Platform Inhomogeneities in PBF-LB/M Process on Alloy 718 |
| title_full | Analysis of Building Platform Inhomogeneities in PBF-LB/M Process on Alloy 718 |
| title_fullStr | Analysis of Building Platform Inhomogeneities in PBF-LB/M Process on Alloy 718 |
| title_full_unstemmed | Analysis of Building Platform Inhomogeneities in PBF-LB/M Process on Alloy 718 |
| title_short | Analysis of Building Platform Inhomogeneities in PBF-LB/M Process on Alloy 718 |
| title_sort | analysis of building platform inhomogeneities in pbf lb m process on alloy 718 |
| topic | additive manufacturing PBF-LB/M Alloy 718 building platform melt-pool shape single track analysis |
| url | https://www.mdpi.com/2076-3417/15/7/4042 |
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