About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Advances in Multi-Principal Elements Alloys X: Structures and Modeling
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Presentation Title |
High-throughput Mapping and Screening of Refractory High Entropy Alloy Property Space |
Author(s) |
Brent G. Vela, Tanner Kirk, Prashant Singh, William Trehern, Kadri Can Atli, Raymundo Arroyave, Ibrahim Karaman |
On-Site Speaker (Planned) |
Brent G. Vela |
Abstract Scope |
The continued development of gas turbine engines demands machinable low density materials capable of enduring temperatures exceeding 1000°C, creep, fatigue crack growth, and oxidation. Refractory High Entropy Alloys (RHEAs), alloys consisting of 4 or more refractory principal alloying components, have been proposed to meet these stringent operating requirements. However, the compositional complexity that endows these alloys with their unique properties also creates a combinatorically vast alloy space that is not easily explored. In this work we demonstrate an alloy design approach to identify regions of the RHEA design space that may meet performance constraints required in modern gas turbine engines. High-throughput CALPHAD, DFT, and analytical model calculations were performed to obtain alloy properties across the Al-Mo-Nb-Ta-V-W RHEA space, while t-distributed stochastic neighbor embedding (t-SNE) was used to visually map this property space. Alloys were filtered according to performance constraints and regions of feasibility were identified in this senary composition space. |
Proceedings Inclusion? |
Planned: TMS Journal: Metallurgical and Materials Transactions |
Keywords |
High-Entropy Alloys, High-Temperature Materials, Computational Materials Science & Engineering |