About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing of Refractory Metallic Materials
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Presentation Title |
High-throughput Synthesis of Refractory High-entropy Alloys by Laser Metal Deposition and Structure-properties Relationships |
Author(s) |
Henrik Dobbelstein, Easo P. George, Evgeny L Gurevich, Aleksander Kostka, Andreas Ostendorf, Guillaume Laplanche |
On-Site Speaker (Planned) |
Guillaume Laplanche |
Abstract Scope |
Materials development is often slowed by the time required to produce and evaluate various alloys with different chemical compositions. This is particularly true for refractory high-entropy alloys (RHEAs), which are difficult to synthesize and process by conventional methods (e.g., arc melting). In this work, compositionally graded TiZrNbHfTa RHEAs were prepared by in-situ alloying of elemental powders using high-throughput laser metal deposition to evaluate a possible way to accelerate the process. The results showed that parameters such as powder morphology and purity, alloy composition, impact printability, microstructure, porosity, and mechanical properties. It was found that alloy strength is mainly influenced by interstitial concentrations of the starting powders, while substitutional solid solution strengthening plays a minor role. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Additive Manufacturing, Characterization |