Abstract
The nanocrystalline Fe52Co34Hf7B6Cu1 soft magnatic alloys composed of bcc-Fe nanocrystals embedded in a residual amorphous matrix were obtained by the magneto-crystallization of melt-spun ribbons. In order to improve the soft magnetic properties of double-phase Fe(Co)-based nanocrystalline alloy, the nanocrystalline alloy specimens were vacuum annealed for 30 min at 100, 200 and 300 . The results showed that the treatment of magnetic pulsing on the amorphous alloy resulted in the nanocrystallization, the grain size of precipitated α-Fe(Co) nanocrystallized phase was 5—10 nm. The low-temperature vacuum annealing of magnetic pulsed specimens further improved the soft magnetic properties of nanocrystalline alloy. The influence of annealing at 100 for 30 min on the properties is most obvious.
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