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The Finemet alloy is used to make transformers for its excellent soft magnetic property. In order to study its distinctive character, it is essential to clarify the structural evolution mechanism especially in early nanocrystallization. The Fe73.5Si13.5B9Nb3Cu1 amorphous ribbons were prepared by single-roller melt-spinning process under argon atmosphere, and then annealed at 350??C, 380??C and 400??C...
Amorphous ribbon of Finemet alloy was obtained by rapid quenching from the melt spinning technique. Normal heat treatment and longitudinal magnetic field heat treatment methods were applied to anneal the Finemet amorphous ribbon. Microstructures of the annealed ribbons were detected by XRD. XRD results showed that nanocrystalline alpha-Fe(Si) phase formed in the amorphous matrix after both annealing...
FeCuNbSiB amorphous microwires with average diameter about 40 mum were fabricated by a specially designed melted quench facility. Anneal treatment at T=673K for 1 hour had been carried out for amorphous wires to obtain nanocrystalline grains with average grain diameter of 34 nm. Then, the heat treated microwires were cut into short fibers, the length and diameter ratio was about 2. The composite samples...
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