Crystallization of Fe₇₈Si₉B₁₃ bulk crystaline/amorphous (c/a) composite

Abstract

A metallic crystalline/amorphous (c/a) bulk composite was prepared by the slow cooling method after remelting the amorphous Fe₇₈Si₉B₁₃ ribbon. By X-ray diffraction (XRD), differential scanning calorimetry (DSC) and scanning electron microscope (SEM), the composite consists of the primary dendrite α-Fe (without Si) as well as the amorphous matrix. After being anneal at 800 K, the uniform spheroid particles are formed in the c/a composite, which does not form in the amorphous ribbon under the various annealing process. Energy dispersive analysis of X-rays (EDAX), SEM and XRD were applied to give more detailed information. The formation and evolution of the particle may stimulate the possible application of the Fe-matrix amorphous alloy.

Keywords

crystalline/amorphous composite / Fe-Si-B / crystallization

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