About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Local Ordering in Materials and Its Impacts on Mechanical Behaviors, Radiation Damage, and Corrosion
|
Presentation Title |
Optimizing Passivation in Multiprincipal Element Alloys through Local Order |
Author(s) |
Mitra L. Taheri |
On-Site Speaker (Planned) |
Mitra L. Taheri |
Abstract Scope |
Multiprincipal element alloys, or high entropy alloys, have been the subject of much interest due to their tendency to exhibit local chemical and structural order. While this complexity of bonding environment has been connected to mechanical properties, only recently has any mechanistic connection between local order and corrosion resistance or passivation been investigated. In this talk, we reveal local ordering to be a key factor not only in alloy passivation, but also in alloy design and optimization. Specifically, the tendency for an alloy to possess clustering of particular elements was found to be tunable, and thus optimization of this clustering can lead to unexpected alloy stoichiometries exhibiting superior corrosion resistance. This interplay of order and passivation is discussed in the context of these results as well as broad design of alloys for extreme environments of corrosion and oxidation. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Characterization, |