| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Symposium
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2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Microstructural and Microhardness Variations of Laser Powder Bed Fusion (L-PBF) Additively Manufactured Inconel 718 Due to Machine Variability and Thickness for Aerospace Applications |
| Author(s) |
Anannya Doris, Leslie Trujillo, Dana Godinez, Edel Arrieta, Ryan Wicker, Paul Gradl, Colton Katsarelis, Francisco Medina |
| On-Site Speaker (Planned) |
Anannya Doris |
| Abstract Scope |
This paper reports on a study investigating the microstructure and microhardness of thin walls fabricated by Laser Powder Bed Fusion (L-PBF) from sixteen geometric feature build plates. The study evaluated any variance in those properties with the variation in thickness by characterizing the XY and YZ planes of seven thin walls of different thicknesses and the base parts. Electron Backscatter Diffraction (EBSD) analysis with inverse pole figure (IPF) mapping was done for four samples from four different machine manufacturers. From the EBSD grain boundary map, the microstructure is composed of equiaxed grains with a lower threshold angle with smaller grains in the border area. Compositional analysis for both the powders and the resulting fully heat-treated LPBF-ed material was analyzed for alloy element stability and contaminants using 10 gm samples. The paper concludes by showing the relationship between composition and microstructural properties. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |