Abstract
Microstructure and soft magnetic properties of a bulk amorphous and nanocrystalline Fe 86 Zr 5.5 Nb 5.5 B 3 alloy prepared by rapid consolidation at a super-high pressure (at 1150 W at 5.5 GPa for 3 min) were investigated. The bulk alloy had a high relative density of 98.3% and high saturation magnetization of 120 emu/g. The size of the nanocrystalline α -Fe phase in the bulk samples was 10–16 nm. The relative density ρ r had a linear relation with the crystalline volume fraction V c in the bulk alloy: ρ r =0.6624+0.5616 V c . The preparing process used in this study makes it easy not only to generate the bulk alloy containing both amorphous and nanocrystalline phases but also to give good soft magnetic properties. And what is more important, there will be no longer restriction in the composition, size and shape of bulk alloys prepared by this process.
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