| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
Hot Roll Nanocrystalline Anisotropic Nd-Fe-B Magnet |
| Author(s) |
Jun Cui, Chaochao Pan, Wei Tang, Gaoyuan Ouyang, xubo Liu, Rayn Ott, Ikenna Nlebedim |
| On-Site Speaker (Planned) |
Jun Cui |
| Abstract Scope |
Nd-Fe-B (Neo) based magnet plays a dominant role in the energy efficiency and renewable energy applications. However, Neo magnets need heavy rare earth elements (HREE) to function at higher temperatures. Nanocrystalline anisotropic Neo magnets may attain high coercivity due to their nano scale grains comparable to the magnetic domain size, thereby become a viable approach to address concerns on HREE criticality. However, making nanograin magnet requires a two-steps process: hot-press for densification followed by hot-deformation for texture. It is an inherently expensive process with limited productivity. Here, we report a novel nanograin Neo magnet fabrication method that is semi-continuous and near-net-shape. We showed that cold rolling of hot tubes at 780°C with 75% thickness reduction can result in nearly full density anisotropic magnet with good BHmax 37.6 MGOe. We will also discuss how processing conditions may affect microstructures and magnetic properties. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, |