EFFECT OF LOW-TEMPERATURE VACUUM ANNEALING ON THE MAGNETIC PULSED AMORPHOUS Fe52Co34Hf7B6Cu1 ALLOY
CHAO Yuesheng, WANG Li, ZHANG Yanhui, ZHU Hanxian, LUO Liping
College of Sciences, Northeastern University, Shenyang 110819
Cite this article:
CHAO Yuesheng, WANG Li, ZHANG Yanhui, ZHU Hanxian, LUO Liping. EFFECT OF LOW-TEMPERATURE VACUUM ANNEALING ON THE MAGNETIC PULSED AMORPHOUS Fe52Co34Hf7B6Cu1 ALLOY. Acta Metall Sin, 2012, 48(6): 749-752.
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.