| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
Fabrication of Alnico Permanent Magnets With Optimized Microstructures via Magnetic-field-assisted Direct Energy Deposition |
| Author(s) |
Anthony Duong, Ian Smitch, Maanav Patel, Omar Bishop, Kyle Snyder, Everett Carpenter, Radhika Barua |
| On-Site Speaker (Planned) |
Radhika Barua |
| Abstract Scope |
Metal additive manufacturing (AM) has emerged as a cutting-edge frontier in materials research, including its application in developing low-cost thermally stable Alnico alloys - a promising alternative for rare-earth permanent magnets, particularly for high-temperature applications. To this end, this study examines process-structure-property correlations in Alnico alloys fabricated using magnetic-field-assisted direct energy deposition (DED) – a metal 3D printing approach known for its unique solidification conditions that inherently produce directionally aligned grains and metastable precipitates. The effect of laser operating parameters (power, speed, beam radius), powder flowability, and static magnetic field on the crucial aspects of the microstructure (including crystal orientation, solute migration, and distribution, grain size, etc) will be presented, following which the magnetic properties of the DED-processed Alnico magnets will be discussed in the context of their microstructure. These findings demonstrate the feasibility of fabricating phase-separated permanent magnets with tailored microstructure using AM routes. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Magnetic Materials, Shaping and Forming |