| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Innovative Powder/Wire Processing of Multifunctional Materials
|
| Presentation Title |
Fabrication of Highly Textured Galfenol Using Laser Powder Bed Fusion |
| Author(s) |
Alexander Baker, Alfred Amon, Jibril Shittu, Hunter Henderson, Emily Moore, Aurelien Perron, Scott McCall |
| On-Site Speaker (Planned) |
Alexander Baker |
| Abstract Scope |
Magnetostrictive materials such as FeGa (Galfenol) provide high precision solid-state sensing capabilities, with applications in magnetic field sensing, load cells, or tunable inductor circuits. The magnetostrictive effect can be enhanced through compositional tuning, or else through promotion of the desirable textures along which the largest magnetostriction values can be obtained. Here, we demonstrate the use of laser powder bed fusion to fabricate highly oriented polycrystals of galfenol, where mm-long grains form a fiber texture with the <001> axes oriented in the build direction. This leads to large magnetostriction values of 275 ppm, approaching those achieved in single crystals. We will present a review of the role of laser energy density in determining the porosity and development of crystallographic texture, and their impact on magnetostrictive properties.
Prepared by LLNL under Contract DE-AC52-07NA27344. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Magnetic Materials, |