|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||High Entropy Alloys VIII
||Quantifying Short-range Ordering in Refractory High-entropy Alloys
||Wei Chen, George Kim, Chanho Lee, Peter Liaw
|On-Site Speaker (Planned)
The material-design strategy of combining multiple elements in near-equimolar ratios has spearheaded the emergence of high-entropy alloys (HEAs), an exciting class of materials with exceptional engineering properties. While random mixing has been widely assumed in multi-principal element solid solutions, both experimental and computational evidence suggests short-range ordering (SRO) exists in many solid-solution HEAs. We employed an integrated first-principles and experimental approach to understand the thermodynamic effects of SRO in the refractory NbTaTiV and NbTaTiVZr HEA systems. Results are compared with predictions from Special Quasi-random Structures (SQS). The existence of SRO produces distinct lattice distortion features in these HEAs and affects their mechanical properties.
||Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume