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-prec...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 hightemperature 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.展开更多
基金supported by the“Pioneer and Leading Goose”R&D Program of Zhejiang(Grant No.2022C01023)National Natural Science Foundation of China(Grant Nos.52101205,92163108,51922102,52001319,and 51971239)+1 种基金Hunan Key Laboratory of Design and Manufacture of Electromagnetic Equipment under the Open Foundation(Grant No.DC202005)Zhejiang Provincial Natural Science Foundation of China(Grant No.LGF22E010002).
文摘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 hightemperature 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.
