Visualizing temperature-dependent phase stability in high entropy alloys

Abstract High entropy alloys (HEAs) contain near equimolar amounts of five or more elements and are a compelling space for materials design. In the design HEAs, great emphasis is placed on identifying thermodynamic conditions single-phase multi-phase stability regions, but this process hindered by difficulty navigating relationships in high-component spaces. Traditional phase diagrams use barycentric coordinates to represent composition axes, which require ( N – 1) spatial dimensions an -component system, meaning that HEA systems with > 4 components cannot be readily visualized. Here, we propose forgoing axes favor two energy axes: formation-energy axis ‘reaction energy’ axis. These Inverse Hull Webs offer information-dense 2D representation successfully captures complex ≥ 5 component systems. We our proposed visualize transition solid-solutions from high-temperature metastability upon quenching, identify important features correlated persistence decomposition metastable HEAs.