|About this Abstract
||3rd World Congress on High Entropy Alloys (HEA 2023)
||Irradiation Effects in a Precipitation-hardened AlCuCrFeNi High Entropy Alloy
||Nathan Curtis, Bao-Phong Nguyen, Junliang Liu, Nate Eklof, Adrien Couet
|On-Site Speaker (Planned)
Interest in the nuclear industry surrounding high entropy alloys (HEAs) is fueled by their observed resistance to microstructural damage under irradiation. HEA compositions of interest were compiled and downselected by comparing their mechanical properties to current structural nuclear materials. An AlCuCrFeNi HEA has reported nanoscale L12 precipitate growth with thermal aging, resulting in a 70% increase in yield strength and an elastic limit an order of magnitude greater than code-certified materials. The presence of nano-precipitates also increases defect-absorbing sinks which, while employed in conventional alloys to increase irradiation resistance, have not been thoroughly explored in HEAs. To better understand the influence of these nano-precipitates, this work presents heavy-ion irradiation results in aged AlCuCrFeNi HEAs. Transmission electron microscopy and nano-indentation techniques were used to characterize the irradiation-induced changes in microstructure and mechanical properties.
||Planned: Metallurgical and Materials Transactions