About this Abstract |
| Meeting |
TMS Specialty Congress 2026
|
| Symposium
|
4th World Congress on High Entropy Alloys (HEA 2026)
|
| Presentation Title |
High-Entropy Alloys: Optimizing Processing Parameters and Establishing Composition-Property Relationships for Advanced Turbine Aeroengine Applications |
| Author(s) |
Andrew S. Jamieson, Sung R. Choi |
| On-Site Speaker (Planned) |
Andrew S. Jamieson |
| Abstract Scope |
This work aimed to optimize processing parameters for arc-melting refractory high-entropy alloys (HEAs) and establish key composition-property relationships for advanced turbine aeroengine applications. Properties of hardness and high-temperature oxidation resistance were tested on a variety of refractory HEAs. These alloys were tested in conjunction with Ni-based superalloys currently used in high-performance Naval aeroengines, thus allowing a comparison between alloy systems to gauge the potential for HEA use in these engines and in similar applications. Fabricated HEA and Ni-based superalloy samples were cut using a low-speed diamond saw to ensure raw and smooth surfaces for testing. Test results showed all HEAs exhibiting higher hardness than the superalloys. Under oxidation, however, the superalloys outperformed all HEAs. The hardness results show promise for high-strength applications, whereas the oxidation results draw hesitancy for high-temperature applications. A model was developed for practical hardness estimations, which was motivated by compositional patterns found in the hardness data. |
| Proceedings Inclusion? |
Undecided |