| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Refractory Metals 2025
|
| Presentation Title |
Creep resistant refractory multiple-principal-element alloy |
| Author(s) |
Gaoyuan Ouyang, Prashant Singh, Hailong Huang, Nicolas Argibay, Matthew J. Kramer, Duane Johnson, Jun Cui |
| On-Site Speaker (Planned) |
Gaoyuan Ouyang |
| Abstract Scope |
Refractory multiple-principal-element alloys (RMPEA) have been considered promising candidates for many ultra-high-temperature service applications for nearly two decades. Still, a few limitations, like room-temperature ductility and unknown creep properties are a major roadblock for their deployment. The complexities in RMPEA design and testing remain a challenge. Combining high-throughput computation and experimental approaches, we showcase the design of novel RMPEA compositions that are more ductile at room temperature and stronger at higher temperature. Using a small-sample punch test, we determined the alloys’ tensile and creep properties up to 1300 °C without the need for large test samples. The high-temperature RMPEA properties are superior to prevalent refractory alloy TZM and nickel-based superalloy, Haynes 282 and PWA1484 (single-crystal). In the Mo-W-Ta-Ti-Zr system, we show that the newly designed alloy is 2X stronger than TZM at 1300 °C, and 10X more creep resistant than TZM and nickel-based superalloy at 1000 °C. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, High-Entropy Alloys, Characterization |