About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Applications
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Presentation Title |
A Study of Process Parameters and Mechanical Performance of Lattices Using Powder Bed Fusion of Stainless Steel 316L |
Author(s) |
Scott C. Jensen, Benjamin C. White, Anthony P. Garland, Michael J. Heiden, David J. Saiz, Brad L. Boyce, Bradley H. Jared |
On-Site Speaker (Planned) |
Scott C. Jensen |
Abstract Scope |
Few structures demonstrate the unique capabilities of laser powder bed fusion (LPBF) better than lattices. Yet, obtaining as-modeled geometries can be surprisingly difficult and can lead to a range of mechanical properties. In this study, we generated 3x3x3 unit cells of FCC lattices under a wide range of laser power and scan speeds. We then identify changes in as-printed strut diameters measured from top and side lattice surfaces. Compression tests identified process dependent mechanical properties, where trends were evaluated as a function of strut diameter and part density. Results revealed which mechanical properties were straightforward to predict using simple feature-based quality metrics while others remain more challenging to capture. The various lattice failure mechanisms encountered will also be discussed.
SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |