|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advances in Multi-Principal Elements Alloys X
||Data-guided exploration of high entropy alloys for cryocooler applications
||Indranil Roy, Ankit Roy, Ganesh Balasubramanian, Louis Santodonato
|On-Site Speaker (Planned)
Closed-cycle helium gas refrigerators (cryocoolers), operating at an ultra-low temperature (down to 2K), rely on materials such as brass screens, Pb-alloy powder, and rare-earth alloy (e.g., Er3Ni). These materials serve as thermal regenerators which absorb and release heat during different phases of the refrigeration cycle. In recent years, the lack of rare-earth material supply has led to an urgent need for the discovery of new cryocooler materials with superior specific heats at low temperatures. High entropy alloys (HEAs) have shown promise mostly as structural materials, but hold potential for thermal applications at cryogenic temperatures. Here, we present results from a data-enabled approach towards the design of HEA compositions for high specific heat at extremely low temperatures.
||High-Entropy Alloys, Machine Learning,