About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Magnetic Materials
|
Presentation Title |
A Semi-continuous Hot Deformation Method for Making Anisotropic Nd-Fe-B Magnet |
Author(s) |
Chaochao Pan, Gaoyuan Ouyang, Wei Tang, Jun Cui |
On-Site Speaker (Planned) |
Jun Cui |
Abstract Scope |
Nd-Fe-B (Neo) based magnet plays a dominant role in energy efficiency and renewable energy applications. However, Neo magnets need the critical heavy rare earth elements to function at higher temperature. Hot-deformed nanocrystalline anisotropic Neo magnets may attain high coercivity due to their highly orientated nano scale grains. However, making hot-deformed 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 continuous and near-net-shape. We showed that cold roll of hot tube at 800°C with 70% thickness reduction can result in nearly full density anisotropic magnet with good BHmax 31.6 MGOe. Moreover, the method allows the making of continuous strip magnet that can be curved to match motor radius, making it possible to maximize the magnetic flux density on rotor circumference, thereby increase motor powder density. |
Proceedings Inclusion? |
Planned: |
Keywords |
Magnetic Materials, |