| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetic Materials
|
| Presentation Title |
Hard Magnetic SmCo5-Cu Nanocomposites Produced by Severe Plastic Deformation |
| Author(s) |
Franziska Staab, Enrico Bruder, Karsten Durst |
| On-Site Speaker (Planned) |
Karsten Durst |
| Abstract Scope |
Textured nanocrystalline SmCo5-Cu magnets are produced by high-pressure torsion (HPT) of powder blends consisting of SmCo5 and Cu powder. The process enables a free selection of the magnetic phase and the grain boundary phase and overcomes limitations imposed by the phase diagram as in conventional sintering routes. With increasing number of rotations, a structural refinement, and an increasing coercivity are observed. TEM and EBSD analyses reveal fragmentation via particle fracture and plastic deformation as microstructural refinement processes. The magnetic hardening is ascribed to the microstructural refinement and the magnetic decoupling of the hard magnetic SmCo5 grains by Cu. The microstructural analyses and magnetic hysteresis measurements indicate the formation of a texture during the HPT process. Consequently, the work demonstrates a new approach for the generation of textured nanostructured hard magnets. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, Composites, |