|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Accelerated Materials Evaluation for Nuclear Applications Utilizing Irradiation and Integrated Modeling
||High-Throughput Synthesis and Ion Irradiation of High-Entropy Alloys using Additive Manufacturing
||Michael J. Moorehead, Michael Niezgoda, Calvin Parkin, Chuan Zhang, Phalgun Nelaturu, Mohamed Elbakhshwan, Kumar Sridharan, Dan Thoma, Adrien Couet
|On-Site Speaker (Planned)
||Michael J. Moorehead
Development of materials for nuclear application often entails a rigorous series of testing and characterization which can encumber the pursuit of potentially novel materials. Such materials include high-entropy alloys (HEAs): multicomponent alloys which often exhibit desirable mechanical and radiation-tolerant properties. While several HEAs have shown excellent phase stability and irradiation resistance, the origins of these properties are still unclear – further challenging nuclear HEA development. In light of this, high-throughput (i) synthesis, (ii) ion irradiation, and (iii) characterization techniques have been employed to accelerate HEA development. Additive manufacturing was used to synthesize 25-coupon arrays of different alloys from the Cr-Fe-Mn-Ni and Mo-Nb-Ti-V composition spaces, from binary to quaternary alloys, using elemental powders. Sample arrays were irradiated with self-ions to 10 dpa and characterized using nano-indentation, XRD and profilometry measurements. Phase evolution has been supported by CALPHAD modeling and compositional trends in radiation response have been compared to theory and literature.