| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys II
|
| Presentation Title |
Interplay of Lattice Distortion and Ordering in Refractory High-entropy Alloys |
| Author(s) |
Wei Chen, Geroge Kim, Chenyang Li, Peter Liaw, Peter Liaw |
| On-Site Speaker (Planned) |
Wei Chen |
| Abstract Scope |
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 understanding the interplay of lattice distortion and SRO in the refractory NbTaTiV and NbTaTiVZr HEA systems. The existence of SRO produces distinct lattice distortion features in these HEAs and affects their mechanical properties. The fundamental understanding of SRO and lattice distortion is coupled with high-throughput first-principles calculations and machine learning to design refractory high-entropy alloys. |
| Proceedings Inclusion? |
Planned: |