About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
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| Symposium
|
Progress Toward Mechanisms, Thermodynamics, and Kinetics of Phase Transformations: An MPMD/SMD Symposium Honoring John H Perepezko
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| Presentation Title |
The inheritance of enenrgy state to crystallization of metallic glasses |
| Author(s) |
Junqiang Wang |
| On-Site Speaker (Planned) |
Junqiang Wang |
| Abstract Scope |
A crucial step in creating cutting-edge soft magnetic alloys is the nano-crystallization of Fe-based amorphous alloys. However, it is unclear how the thermal history affects the nano-crystallization. In this talk, I will introduce our recent progress on studying the inheritance from glassy state to crystallization kinetics. High-precision nanocalorimetry and in-situ high temperature transmission electron microscopy are used to systematically examine how the pre-annealing relaxation process affects the nanocrystallization of Au- and Fe-based amorphous alloys. We discover that the glass with more thermal energy storage will crystallize into superb nanocrystalline structures with exceptionally advanced soft magnetism. The soft magnetic properties of Fe-B nanocrystalline alloys can be improved by increasing the relaxation temperature. This finding provides solid and clear evidence for the influences of thermal history on crystallization behavior for Fe-based amorphous alloys, which is helpful for designing advanced soft magnetic nanocrystalline alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Magnetic Materials, |