About this Abstract |
Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Symposium
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2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Presentation Title |
Multiphysics Modeling to Assess the Powder Bed Characteristics of Inconel 718 for a Circular Substrate in Laser Powder Bed Fusion |
Author(s) |
Nayan Pundhir, Oluwapelumi O. Adejumo, K. Chandrashekhara, Joseph W. Newkirk, Heath Misak, Cesar O. Rios |
On-Site Speaker (Planned) |
Nayan Pundhir |
Abstract Scope |
Laser Powder Bed Fusion (LPBF) is an additive manufacturing (AM) technique that builds complex metal parts in a layer-by-layer manner. In the LPBF process, a laser directly melts and fuses metal powder particles. The quality of the manufactured part depends on several parameters, including the powder packing fraction, laser power, laser scan speed, and hatch spacing. In this study, a computational fluid dynamics (CFD) model has been developed using Flow-3D software. The powder bed characteristics of Inconel 718 powder have been evaluated for a single-layer, single-track deposition using the LPBF process on a circular substrate. The realistic powder size distribution data of Inconel 718 were obtained using scanning electron microscopy (SEM). The effect of different laser power levels on the melt pool dimensions of the deposited layer has been analyzed. Additionally, the influence of airflow on the erosion of the powder has been investigated. |
Proceedings Inclusion? |
Planned: Post-meeting proceedings |