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Meeting 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Symposium 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Presentation Title Influence of Gaussian and Ring Beam Energy Profiles on Melt Pool Morphology in Laser-Based Powder Bed Fusion of GRX-810 and 304 Stainless Steel
Author(s) Lizbeth Licerio, Rebecca Herrera, James Carney, Kurtis Watanabe, Colton Katsarelis, Paul Gradl, Francisco Medina
On-Site Speaker (Planned) Lizbeth Licerio
Abstract Scope This study investigates the influence of Gaussian and ring-beam energy profiles on melt pool morphology using single-line-scan experiments on 304 stainless steel and GRX-810 alloy substrates. Quantitative measurements of melt pool width, depth, and bead shape were performed to analyze the effects of beam profile on track formation. The results demonstrated that the conventional Gaussian beam generated deeper, concave-shaped melt pools, consistent with a higher energy concentration at the beam center. In comparison, the ring beam profile produced wider and shallower beads, indicating a more uniform energy distribution. These findings underscore that beam shaping is essential for controlling melt pool geometry and the resulting microstructure during laser-based additive manufacturing. Data from 304 stainless steel were used to develop process parameters, while GRX-810 allowed for validation under more advanced alloy conditions, establishing a basis for optimizing process control across a range of material systems.
Proceedings Inclusion? Undecided

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