Oxide Dispersion Strengthened Medium Entropy Alloy

NASA Glenn researchers developed a new oxide dispersion strengthened medium entropy alloy (ODS-MEA) via additive manufacturing (AM). ODS alloys, in which nanoscale ceramic particles are distributed within the metal, were originally developed to enhance mechanical properties (e.g., creep resistance, tensile strength, microstructure integrity) at extreme temperatures. Such alloys show promise for metal components of gas turbines, rocket engines, nuclear reactors, and other high-temperature applications; however, the conventional mechanical alloying process to produce such alloys is highly inefficient, time-consuming, and costly.