Crystallization behavior of Fe₇₈Si₁₃B₉ metallic glass under high magnetic field

The effects of high magnetic field on the crystallization behavior of the Fe₇₈Si₁₃B₉ metallic glass ribbon were studied. The samples were isothermal annealed for 30 min under high magnetic field and no field,respectively. Microstructure transformation during crystallization was identified by X-ray diffraction and transmission electron microscopy. It was found that the crystallizations of Fe₇₈Si₁₃B₉ metallic glass processed under different conditions were that the precipitation of dendrite α-Fe(Si) and spherulite (Fe,Si)₃B phases forms amorphous matrix and then the metastable (Fe,Si)₃B phase transforms into the stable Fe₂B phase. The grain size of the crystals is smaller and more homogeneous for the isothermal annealed samples under high magnetic field in comparison with that under no field indicating that the crystallization behavior of Fe₇₈Si₁₃B₉ metallic glass is suppressed by high magnetic field.