| Abstract Scope |
Understanding phase evolution in high entropy alloys is a difficult task due to variable defect energy landscapes, local chemical and structural order, and experimentally, multiple components that may be more or less visible or to sensing or even manageable using numerical techniques. Nonetheless, these alloys exhibit opportunities for leveraging complex phase evolution for extreme environment stability, including temperature, high strain rate, oxidation, and corrosion. In this talk, I will review various data-assisted, multiscale characterization techniques that allow for the development of a true understanding of the role of the order, energetic complexity, and complex stoichiometries on hierarchical phase evolution phenomena in high entropy alloys. Notable findings include new multiscale, non-equilibrium oxides, novel orientation relationships for secondary phases, and finally, tunable dislocation network evolution. |