| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys II
|
| Presentation Title |
Processing of Refractory Multi-Principal Element Alloys for Ultrahigh Temperature Performance |
| Author(s) |
Amy J. Clarke, Benjamin Ellyson, Adira Balzac, Nathan Peterson, William Waliser, Nelson Delfino de Campos Neto, Megan Le Corre, Abigail Miklas, Jonah Klemm-Toole, Francisco Coury, Kester Clarke, Michael Kaufman |
| On-Site Speaker (Planned) |
Amy J. Clarke |
| Abstract Scope |
Refractory multi-principal element alloys (RMPEAs) hold the promise to withstand continuous operation at ultrahigh temperatures (above 1200 °C). The majority of these alloys are single phase solid solutions with a body centered cubic structure, although multiphase microstructures may also hold some potential for ultrahigh temperature performance, especially for short-use and/or expendable environments (below 1200 °C). That said, processing of RMPEAs remains challenging, given their strong temperature dependence at low and high temperatures, potential sensitivity to impurities, and propensity to form heterogeneous microstructural characteristics. Here we highlight recent efforts to design and develop RMPEAs by thermodynamic, kinetic, and solid solution strengthening modeling and to tailor their microstructures by thermomechanical processing or additive manufacturing. These results will inform the development of processing maps and be used to understand and control RMPEA microstructural evolution and characteristics important to ultrahigh temperature performance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, High-Temperature Materials, Phase Transformations |