About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetic Materials
|
| Presentation Title |
D-20: The Effect of Stress-annealing on the Mechanical and Magnetic Properties in Fe-based Metal-amorphous Nanocomposites |
| Author(s) |
Nickolaus M. Bruno, Andrew Scherrer, Elijah Meakins, Ronald D. Noebe, Alex M. Leary, Vladimir Keylin, Grant E. Feichter, Maria Willard |
| On-Site Speaker (Planned) |
Nickolaus M. Bruno |
| Abstract Scope |
Inductor cores comprised of planar-flow-cast Fe-based metal-amorphous nanocomposite (MANC) ribbons have been shown to exhibit a relatively high magnetic induction and low core losses at high excitation frequencies. However, they generally exhibit permeabilities that are too high for use in many filter applications. To overcome this issue and to decrease magnetic permeability, they can be annealed at temperatures above 500°C under high tensile stresses, using an in-line process known as stress-annealing (SA). SA is a difficult task, particularly for Fe-based alloys, due to the well-known embrittlement that takes place in metallic glasses after annealing at even moderate temperatures. The present work aims to understand and improve the SA process for a few compositions of Fe-based MANC ribbons through thermomechanical and mechanical characterization, identification of defects in as-cast precursor ribbons that lead to failure during processing, and by understanding the residual stresses and mechanical properties in SA and as-cast precursor material. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Mechanical Properties, Magnetic Materials |