About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Magnetic Materials for Energy and Power Conversion Applications
|
Presentation Title |
Soft Magnetic Fe-Co-Cu Supersaturated Solid Solutions by Severe Plastic Deformation |
Author(s) |
Martin Stuckler, Heinz Krenn, Lukas Weissitsch, Stefan Wurster, Andrea Bachmaier |
On-Site Speaker (Planned) |
Martin Stuckler |
Abstract Scope |
Severe plastic deformation can be used to obtain grain sizes in the nanocrystalline regime in bulk samples. With high-pressure torsion (HPT) in particular, any desired amount of strain can be applied continuously, yielding cylindrical specimens sizing up to several centimeters. Using powders as starting materials, any composition is accessible. Furthermore, also intermixing of several binary, thermodynamically non-miscible systems is possible. In the Co-Cu system in particular, single-phase supersaturated solid solutions have already been processed, whereas samples with large Co-fractions exhibit soft magnetic properties. To further improve the magnetic properties, Co is partially substituted with Fe. The focus is on the formation of supersaturated solid solutions by HPT-deformation. Microstructural properties, as revealed by electron microscopy and X-ray diffraction, are correlated to the magnetic properties, measured with DC-SQUID magnetometry and hysteresographic measurements. Furthermore, promising compositions are exposed to annealing treatments, to investigate the thermal stability and the evolution of magnetic properties. |
Proceedings Inclusion? |
Planned: |
Keywords |
Magnetic Materials, Characterization, |