About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Thermo-Mechanical Processing of Refractory Alloys
|
| Presentation Title |
Breaking the Brittleness Barrier: How Severe Plastic Deformation and Interstitials Affect Plasticity in the TaNbVZrTi RHEA |
| Author(s) |
Micah Sweezey, Nick Krienke, Saryu Fensin, Suveen Mathaudhu |
| On-Site Speaker (Planned) |
Micah Sweezey |
| Abstract Scope |
Refractory high entropy alloys (RHEAs) offer exceptional high-temperature strength, making them attractive for use in extreme environments. However, RHEAs suffer from poor tensile ductility, limiting their engineering applications. In order to utilize the full potential of RHEAs, the mechanisms by which microstructure and interstitials affect mechanical performance in RHEAs must be understood. This work employs a powder metallurgy approach to investigate strategies for enhancing plasticity in the TaNbVZrTi RHEA without sacrificing strength, including the effect of severe plastic deformation via high pressure torsion and the addition of oxygen interstitial complexes. Novel microtensile testing is employed to understand the response of the TaNbVZrTi RHEA to these strategies and shed light on ductility improvement in RHEAs. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Powder Materials, High-Entropy Alloys, Mechanical Properties |