About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Materials Design and Alloy Development IV: Rapid Development
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Presentation Title |
Composition-dependence of the Microstructural and Mechanical Properties of Co-Cr-Fe-Ni Multicomponent Alloys Fabricated by Directed Energy Deposition |
Author(s) |
Daniel Salas, Ryan Anthony Saucier, Tanner Kirk, Sezer Picak, Michael Elverud, Raymundo Arróyave, Ibrahim Karaman |
On-Site Speaker (Planned) |
Daniel Salas |
Abstract Scope |
Quaternary Co-Cr-Fe-Ni alloys forming single phase disordered FCC structures and with a minimum elemental content of 10 at.% conform a family of medium entropy alloys that covers a vast compositional-space. An optimum exploration of such space for the design and discovery of novel FCC alloys with optimized mechanical properties requires a high-throughput methodology for both material selection and production. Firstly, CALPHAD-based calculations were employed for screening and delimiting the compositional-space of FCC-forming Co-Cr-Fe-Ni alloys and a k-medoids algorithm was used for composition selection. Following, printing parameters were optimized for obtaining fully dense builds and twenty different alloys were printed from elemental high-purity powders thanks to a laser engineered net shaping system equipped with four hoppers. Finally, the microstructural and mechanical properties of these materials were characterized in both as-printed and solution heat treated conditions, allowing us to establish relationships between composition, microstructure, and the mechanical response of Co-Cr-Fe-Ni alloys. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, High-Entropy Alloys, Mechanical Properties |