作者: T Ohkubo , H Kai , A Makino , Y Hirotsu
DOI: 10.1016/S0921-5093(00)01870-0
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摘要: Abstract Structural changes in the primary crystallization process of amorphous Fe 90 Zr 7 B 3 alloy have been investigated using modern electron microscope techniques. In as-quenched specimen, bcc–Fe clusters as small 1 nm were observed by high resolution microscopy (HREM). Nanoprobe energy dispersive X-ray spectroscopy revealed a development Zr-enriched zones beside α-Fe nanocrystals initial stage at 733 K. Besides nanocrystals, 2 and Zr-type nanoprecipitates identified nanodiffraction HREM after annealing 923 Electron diffraction pair distribution function (PDF) analysis performed for annealed specimens. The PDF matrix combined with reverse-Monte-Carlo simulation that bcc-like are formed already state. coordination number Zr–Fe distance short-range order (SRO) structures around atoms both decreased on towards formation local resembling structure units or phases. results strongly suggest polymorphic reaction from regions to stage. Zr-like SROs is thought stabilize structure, contributes suppress growth optimized good soft-magnetic property.