Engineering Short Range Order in High Entropy Alloys for Fusion

Structural components for fusion reactors are bombarded with high energy neutrons and structural alloys with good irradiation and creep-resistance is critical. V-based high entropy alloys are attractive candidates for structural components. High Entropy Alloys show Chemical short-range order (CSRO) which significantly influence its properties. We first discuss a recently developed scalar metric for short range order in High Entropy materials. This new metric is defined in terms of like and unlike bonds in multi-component systems. Next, we present an open-source framework OPERA (Order Parameter Engineering in Random Systems) that can generate the configurations of a given multi-component alloy system with prescribed chemical short-range order without explicit energy calculations through combinatorial sampling and demonstrate these on High Entropy Alloys that are attractive blanket materials.