| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Thermodynamics and Kinetics of Alloys III
|
| Presentation Title |
Insights into Patterns and Morphologies of Quaternary FeAlNiCo Alloy During Magnetic Field-Assisted Manufacturing |
| Author(s) |
Trevor C. Robertson, Jon Flores, Mahmood Mamivand |
| On-Site Speaker (Planned) |
Trevor C. Robertson |
| Abstract Scope |
The Alnico alloys can potentially replace the rare-earth-based permanent magnets in high-temperature applications such as electric vehicles. Achieving this goal requires a deep understanding of the mechanisms underlying nanostructure formation in this alloy. The generated knowledge will enable microstructure and motif engineering to improve the alloy’s magnetic properties. In this work, we have developed a phase field model to simulate the process of phase separation in FeAlNiCo medium-entropy alloy during magnetic field-assisted manufacturing. The total free energy includes chemical bulk free energy, gradient energy, elastic energy, and magnetic free energy. To consider the effects of the external magnetic field the exchange energy, demagnetizing field energy, external magnetic field energy, and magnetocrystalline anisotropy energy are considered. The model is parameterized using the CALPHAD technique. The model successfully simulates the formation of two distinct FeCo-rich and AlNi-rich regions elongated in the direction of the external magnetic field. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, Magnetic Materials |