About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Magnetic Materials for Energy and Power Conversion Applications
|
Presentation Title |
Processing and Calorimetry of Alnico in High Magnetic Fields |
Author(s) |
Michael Kesler, Xubo Liu, Ikenna Nlebedim, Matthew Kramer, Orlando Rios, Michael Mcguire |
On-Site Speaker (Planned) |
Michael Kesler |
Abstract Scope |
We have investigated the effects of thermomagnetic processing on directionally solidified alnico magnet materials in magnetic fields up to 9 T. The work employed large superconducting magnet systems fitted with induction furnaces and a custom calorimetry insert. Calorimetry measurements of alnico magnets were performed to study the effect of high magnetic fields and heating/cooling rates on thermal signatures of phase transformations, including solutionizing and spinodal decomposition, by cycling in the temperature range between 400 C and 1300 C at magnetic fields between zero and 9 T. Based on these results, heat treatments were performed (solutionizing, quenching, spinodal decomposition, and draw) in high magnetic fields to observed the effects on the resulting permanent magnet properties and microstructures as determined by magnetization measurements and electron microscopy. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |