| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2024 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-62: Compositional and Structural Non-uniformity in Refractory High Entropy Alloys |
| Author(s) |
Sydney Grace Fields, Merbin John, Deepak Pillai, Lin Li, Yufeng Zheng |
| On-Site Speaker (Planned) |
Merbin John |
| Abstract Scope |
Refractory high entropy alloys (RHEA), composed of four or more refractory elements, generally form simple body centered cubic structure and showcase high strength and improved oxidation resistance at high temperature. Thus, RHEAs are promising candidates in aerospace, nuclear, and chemical applications, demonstrating the potential to supplant nickel-based superalloy as the next frontier in high-temperature materials. The present study explores the microscale to nanoscale compositional and structural non-uniformities in an as-cast WMoNbTa HEA via the advanced characterization techniques including scanning electron microscopy (SEM), transmission electron microscopy (TEM) and atom probe tomography (APT). The grain structure in the HEA was studied using SEM electron backscatter diffraction (EBSD). Different phases formed were identified using TEM diffraction and imaging. X-ray energy dispersive spectroscopy (XEDS) in the SEM and TEM as well as APT were adopted to study the micro- to nano-scale compositional non-uniformities in the WMoNbTa HEA. The microstructure characterization will be discussed. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
High-Entropy Alloys, High-Temperature Materials, Characterization |