About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Presentation Title |
Hybrid DED Process Parameter Development and Translation across Spot Size |
Author(s) |
Kenton Blane Fillingim, Thomas Feldhausen, Rangasayee Kannan, Peeyush Nandwana, Kyle Saleeby, Rebecca Kurfess |
On-Site Speaker (Planned) |
Kenton Blane Fillingim |
Abstract Scope |
Directed Energy Deposition (DED) systems now allow for variable laser spot size potential. However, a method should be developed for easier parameter development and translation across a range of spot sizes. A strategy was formed to produce 316L stainless steel walls for beam diameters ranging from 1.5mm – 3.5mm. The developed method keeps energy density constant while varying power, speed, and powder flow rates. Starting with a known 3.5mm spot size parameter set, scan speed and powder flowrate are modified proportionally to the decrease in spot size. Five walls at different beam diameters produced acceptable porosity and hardness values, giving validation to the proposed rule of thumb. Differences in hardness and grain size will be discussed. Time, material, and net shape considerations are discussed from a DED hybrid manufacturing context. This study provides insight towards the influence of both energy density and spot sizes on build outcomes. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |