About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Materials Design and Alloy Development V – Design Fundamentals
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Presentation Title |
Microstructure and Mechanical Properties of Near-eutectic Al-Ce-Ni-Fe Alloys Produced by Laser Powder-bed Fusion |
Author(s) |
Tiffany Wu, Amit Shyam, Alex Plotkowski, David Dunand |
On-Site Speaker (Planned) |
Tiffany Wu |
Abstract Scope |
Additively manufactured aluminum alloys offer an opportunity to achieve mechanical performance at elevated temperatures superior to conventional processing routes, and therefore, may be able to replace denser alloys. Yet, the selection on processible additive manufactured aluminum alloys is currently limited. Eutectic-based aluminum alloys are good candidates for high-temperature applications, as they show good processibility (hot-tearing resistance) and strengthening (load transfer to large volume fraction of eutectic formed during solidification). In this work, a new quaternary near-eutectic Al-6.5Ce-3.2Ni-0.8Fe (wt.%) was fabricated via laser powder-bed fusion. We show how different microstructures impact tensile and creep properties up to 400°C. Coarsening resistance of the eutectic phases is discussed with microhardness and microstructure evolution during aging. By comparing with a cast alloy of the same composition, we demonstrate the effect of non-equilibrium conditions, achieved via additive manufacturing, on eutectic morphology and phases formation, and therefore on the mechanical response of the alloy. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Aluminum, Mechanical Properties |