About this Abstract |
Meeting |
2nd World Congress on High Entropy Alloys (HEA 2021)
|
Symposium
|
2nd World Congress on High Entropy Alloys (HEA 2021)
|
Presentation Title |
ON DEMAND: Prediction of Optimal High Entropy Alloys Using New Thermodynamic Multi-objective Criteria |
Author(s) |
Aimen E. Gheribi, Arthur Pelton, Jean-Philippe Harvey |
On-Site Speaker (Planned) |
Aimen E. Gheribi |
Abstract Scope |
We present an original formalism to identify single and dual phase regions (temperature-compositions) within the Fe-Cr-Mn-Ni-V-Ti-Al-Co-Mo system. The identification of single or dual phase regions is the first step towards the design of high entropy alloys (HEA) with interesting mechanical, thermo-physical and corrosion resistance properties. The composition ranges of new potential HEAs are calculated considering a set of multi-objective functions linked to the single (dual)-phase start temperature, the room-temperature driving force for phase assemblage evolution and the solidification range under a set of non-smooth and non-linear compositions and property constraints.
The proposed approach links a constrained Gibbs energy minimization technique to an optimization algorithm implemented for solving “blackbox” objective functions and constraints. The predictive capability of the proposed approach depends on the accuracy of the thermodynamic databases considered to calculate the phase equilibria. Several examples of new first-generation HEAs potentially suitable for future industrial applications will be presented. |
Proceedings Inclusion? |
Undecided |