About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Presentation Title |
Functionally Graded Refractory High Entropy Alloys Fabricated with Directed Energy Deposition for Alloy Development |
Author(s) |
Michael Juhasz, C. Rietema, J. Shittu, B. Ellyson, T. Voisin, J. Mckeown |
On-Site Speaker (Planned) |
Michael Juhasz |
Abstract Scope |
The astronomical combination space of possible alloys in the high entropy alloy (HEA) domain is daunting. The ability to create and test large swaths through those compositional spaces is an important component to the eventual down-selection of alloys with engineering interest. Laser Powder Directed Energy Deposition (LP-DED) as a manufacturing method is uniquely poised to add significant value to alloy development in the HEA space which is mainly due to DED's easy incorporation of multiple materials. Discussed here is an experimental framework using DED and in-situ alloying of elemental powders for screening of targeted refractory HEA (R-HEA) alloy systems which complements considerable material simulation work already completed. Presented is an investigation of yield strength versus ductility trade-offs in functionally graded samples as a screening tool for R-HEAs. Prepared by LLNL under Contract DE-AC52-07NA27344. Funding: Laboratory directed research and development projects 22-SI-007. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |