| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alloy Behavior and Design Across Length-Scales: An SMD Symposium Honoring Easo George
|
| Presentation Title |
Predicting High Entropy Alloy Phase Stability across Length Scales |
| Author(s) |
James R. Morris, German Samolyuk, Yury Osetsky, G. Malcolm Stocks |
| On-Site Speaker (Planned) |
James R. Morris |
| Abstract Scope |
One of the challenges for theory is to predict behaviors without prior information, providing both contact with experiments and the ability to predict behaviors not yet observed. In this talk, I will highlight theoretical work motivated directly by experimental efforts from Easo George. In particular, I will focus on phase stability of high entropy alloys and related materials. The prediction of specific behaviors of alloys requires a consideration of more than entropy. Understanding the role of enthalpy led to the ability to make reasonable predictions of which compositions are likely to form single-phase alloys. These concepts have been refined, and have proven to be reasonable through a great expansion of experimental results since originally formulated. We will also discuss how the disorder of 3- and 4-component alloys of 4f and 5f metals can stabilize a particular crystal structure, through non-entropic contributions.
<BR>
This work was supported by DOE’s BES-MSE program. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Computational Materials Science & Engineering, Phase Transformations |