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 |
Thermodynamic and Mechanical Properties Prediction within the Cr-Fe-Mn-Ni Alloy System |
Author(s) |
Tanguy J. Manescau, James Braun, Olivier Dezellus |
On-Site Speaker (Planned) |
Tanguy J. Manescau |
Abstract Scope |
Thermodynamic equilibrium calculations using Thermo-Calc and the TCHEA3 database were performed on the Cr-Fe-Mn-Ni system to determine the face centered cubic (fcc) single-phase solid solutions at given temperatures. Borders of the fcc composition zone were delimitated by acquiring zero phase fraction lines. For each calculation, temperature and chromium content were fixed to allow planar representation in the CrX-Fe-Mn-Ni system for a given temperature. Then, several solid-solution strengthening models from the literature were implemented in the Cr0.2(FexMnyNiz)0.8 pseudo-ternary system to identify elemental strengthening tendencies to optimize the composition. Free Gibbs energy differences between fcc and hexagonal close packed phases were also used as a tool to estimate stacking fault energy and thus, transformation induced plasticity likeliness. Lattice friction stress of 11 compositions of the alloy system were extrapolated from tensile tests at different grain sizes. The objective is to ease the solid-solutions selection for complex concentrated alloy development. |
Proceedings Inclusion? |
Undecided |