Abstract
A crucial step in creating cutting-edge soft magnetic alloys is the nanocrystallization of Fe-based amorphous alloys. However, it is unclear how the thermal history affects the nanocrystallization. In this work, 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 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.
Original language | English |
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Article number | 256111 |
Number of pages | 8 |
Journal | Science China Physics, Mechanics & Astronomy |
Volume | 66 |
Issue number | 5 |
DOIs | |
Publication status | Published - May 2023 |
Keywords
- amorphous alloys
- enthalpy relaxation
- microstructure development
- nanocrystallization
- soft magnetic properties