| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Acta Materialia Symposium
|
| Presentation Title |
Acta Materialia Silver Medal Lecture: Thermodynamic (in)Stability and Deformation Mechanisms of Refractory Complex Alloys |
| Author(s) |
Jean-Philippe Couzinie |
| On-Site Speaker (Planned) |
Jean-Philippe Couzinie |
| Abstract Scope |
Alloy design based on multi-principal elements, mixed in (near) equiatomic proportions and stabilized by high-entropy is a breakthrough concept in metallurgy. Among the most interesting studied solutions, refractory complex concentrated alloys (RCCAs) with body-centered cubic (bcc) structures have received attention for high-temperature applications. The chemical complexity of those systems has a considerable influence on thermodynamic stability but also elementary deformation processes. Several open questions are still unsolved. In that framework, the talk will first give some insight into the plastic deformation processes in solid solutions of refractory systems with or without presence of B2-type order. Microstructural (in)stability of bcc+B2 microstructures will then be addressed and possible new strategies for the RCCAs development will finally be discussed with a special focus on materials solutions with interface-driven microstructures and finely distributed phases. |
| Proceedings Inclusion? |
Undecided |