| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Refractory Metals 2023
|
| Presentation Title |
Selection, Processing and Characterization of Cr-containing Multiphase Refractory Complex Concentrated Alloys |
| Author(s) |
Nelson Delfino De Campos Neto, Benjamin Ellyson, Todd Butler, Kester D. Clarke, Amy J. Clarke |
| On-Site Speaker (Planned) |
Nelson Delfino De Campos Neto |
| Abstract Scope |
For ultrahigh temperature performance and continuous operation above 1200 °C, single phase body centered cubic (BCC) solid solution refractory complex concentrated alloys (RCCAs) are desired. Significant opportunity also exists for multiphase RCCAs designed for short-use and/or expendable environments below 1200 °C. Cr-containing RCCAs can present good mechanical properties, suitable oxidation resistance and perhaps even be compatible with coatings. Depending upon the alloy, these alloys tend to show different phases. For example, CrNb, CrNbTi, and CrNbTaTi alloys containing BCC + Laves (C15) phases have revealed promising mechanical properties and oxidation behaviors up to 1200 °C. Significant opportunity exists to influence the microstructure evolution and properties of multiphase, Cr-containing RCCAs by thermomechanical processing. Here we report on our recent progress in the selection, fabrication, and thermomechanical processing and microstructural characterization of novel Cr-containing RCCAs for high temperature applications. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
High-Entropy Alloys, High-Temperature Materials, Characterization |