ICME Design of High Entropy Alloys for High-Temperature Applications

High entropy alloys (HEAs) are a recently discovered class of materials that consist of a single-phase disordered solid solution of five or more components at or near equi-atomic composition. HEAs are stabilized at high temperature by their configurational entropy and have exhibited high strength and low plasticity at elevated temperatures. For these reasons, HEAs have the potential to dramatically surpass traditional alloys across a range of high-temperature, demanding applications. QuesTek Innovations is employing integrated computational materials engineering (ICME) methods to accelerate development of HEA designs for practical applications, particularly turbine blades. We will report on progress of HEA ICME tool development, including high-throughput ab-initio calculations, CALPHAD thermodynamic databases, and critical structure-property models.