About this Abstract |
| Meeting |
TMS Specialty Congress 2026
|
| Symposium
|
4th World Congress on High Entropy Alloys (HEA 2026)
|
| Presentation Title |
High-Throughput Assessment of Equilibrium Phases in Al–Ti–Nb–Mo–V/Cr Systems |
| Author(s) |
Jiri Kozlik, Frantisek Lukac, Kristina Bartha, Katerina Fickova, Eliska Jaca, Monika Vilemova, Josef Strasky |
| On-Site Speaker (Planned) |
Jiri Kozlik |
| Abstract Scope |
Reliable experimental thermodynamic data are crucial for developing refractory complex concentrated alloys (RCCAs), whose vast compositional spaces require high-throughput exploration. We present such an approach for the Al–Ti–Nb–Mo–V and Al–Ti–Nb–Mo–Cr systems. Using blended elemental powder metallurgy (BEPM) combined with field-assisted sintering (FAST), we produced a single specimen containing 19 nominal compositions. After long-term annealing at 1400 °C, the materials reached chemical homogeneity and equilibrium phase states, with interstitials kept low (<0.1 wt% O, <0.015 wt% N). The controlled geometry enabled efficient characterization by XRD and EDS. We identified equilibrium phases, crystal structures, and phase chemistries, then compared the results with CALPHAD predictions using the TCHEA8 database, highlighting discrepancies and blind spots. The accompanying dataset offers a foundation for improving CALPHAD models in future evaluations. |
| Proceedings Inclusion? |
Undecided |