| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Stability in Extreme Environments
|
| Presentation Title |
Effect of Annealing Temperature on the Structure and Mechanical Properties of a Single-phase WFeNiMo Multi-principal Element Alloy Film |
| Author(s) |
Zahidur Rahman, Michael Detisch, John Balk |
| On-Site Speaker (Planned) |
Zahidur Rahman |
| Abstract Scope |
The equimolar WFeNiMo multi-principal element alloy (MPEA) has a multiphase microstructure consisting of a BCC dendritic phase and a rhombohedral μ phase dispersed in a continuous FCC matrix. To understand and improve the mechanical properties of this MPEA, the thermomechanical behavior of each individual phase must be properly characterized. A magnetron sputtering system was used to deposit a single-phase FCC W0.125Mo0.375FeNi alloy film on (0001) c-plane sapphire substrate. To study the structural properties during annealing at increasingly higher temperatures starting from 300˚C, X-ray diffraction analysis was employed and the crystal phase(s) were characterized. Cross-section film imaging revealed the effect of annealing temperature on the grain size through the film. Microstructural characterization was complemented by experiments in a wafer curvature instrument to understand the evolution of stress during annealing. Combined with nanoindentation at elevated temperatures, these results provided a deeper understanding of the stability and mechanical behavior of the FCC phase. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Thin Films and Interfaces, Mechanical Properties |