About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Chemistry and Physics of Interfaces
|
| Presentation Title |
Grain- and interphase boundary diffusion in compositionally complex alloys |
| Author(s) |
Sergii V. Divinskyi |
| On-Site Speaker (Planned) |
Sergii V. Divinskyi |
| Abstract Scope |
While multi-principal element / high-entropy / compositionally complex alloys attract increasing attention, relatively little is known about interface boundary diffusion in them. Here, the recent fundings will be reviewed with an emphasize on structure and compositional transformations at the grain boundaries and their impact on the diffusion behavior. The results of the tracer measurements of grain boundary diffusion in high-entropy CoCrFeNi and CoCrFeMnNi alloys as well as those for short-circuit diffusion in compositionally complex AlCoCrFeNi2.1 and AlCoCrFeNiTi0.2 alloys are presented. With this, the contributions of grain- and interphase boundaries are carefully differentiated. The rates of interphase boundary diffusion in the eutectic AlCoCrFeNi2.1 alloy are found to outperform the contributions of grain boundary diffusion in the single-phase FCC and B2 fractions. The impact of the orientation relationships between the constituting phases is revealed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Characterization, |