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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Advances in Multi-Principal Elements Alloys X: Alloy Development and Properties
Presentation Title Strengthening in HEAs by Solute-solute Interactions and Short-range-order
Author(s) William A. Curtin, Shankha Nag, Binglun Yin
On-Site Speaker (Planned) William A. Curtin
Abstract Scope Strengthening in HEAs has been accurately predicted in a number of HEAs using an analytic theory that assume a random alloy without solute-solute interactions. In alloys with moderate strength both solute-solute interactions in the random alloy and short-range-order (SRO) driven by solute-solute interactions could have some non-negligible impact on strengthening. Here, we present extensions of the original random theory to include solute-solute interactions and SRO, with easy-to-apply analytical models when interactions extend over only a few neighbor shells. Applications of the extended theory are made to several FCC HEAs to demonstrate quantitative effects in the range of realistic material parameters with solute-solute interactions computed via first-principles Density Functional Theory.
Proceedings Inclusion? Planned:
Keywords High-Entropy Alloys, Mechanical Properties, Modeling and Simulation


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