| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Effect of Annealing Temperature on the Structural and Mechanical Properties of the Multi-principal Element Alloy W5Mo15Fe40Ni40 |
| Author(s) |
Zahidur Rahman, Michael J. Detisch, Thomas John Balk |
| On-Site Speaker (Planned) |
Zahidur Rahman |
| Abstract Scope |
Understanding phase transformations and secondary precipitation during annealing at increasingly higher temperature is important in the processing of multi-principal element alloys (MPEAs) to achieve target microstructures with improved properties. The equiatomic MPEA WMoFeNi exhibits three phases, including a soft matrix phase of composition W5Mo15Fe40Ni40 and a harder Mo-rich phase that appears to improve alloy strength without sacrificing ductility. Vacuum arc melted W5Mo15Fe40Ni40 was thermomechanically processed to achieve a simplified microstructure. The microstructures of as-cast and annealed samples were characterized using X-ray diffraction and electron microscopy, including the evolution of microstructure at elevated temperatures. Mechanical properties were measured by nanoindentation and micro specimen tensile testing. Phase transformations were characterized by thermal analysis. In-situ microscopy and diffraction analysis, along with thermal analysis curves, provide a more complete understanding of microstructural evolution of W5Mo15Fe40Ni4 annealed at different temperatures and inform microstructural design efforts to improve mechanical behavior. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Mechanical Properties, Phase Transformations |