In-situ crystallization of amorphous Fe73−Nb Al4Si3B20 alloys through synchrotron radiation

Abstract In the present work Fe 73− x Nb x Al 4 Si 3 B 20 ( x = 5, 10) alloys have been processed by melt-spinning with the aim of studying the crystallization sequence through annealing in suitable temperatures. Melt-spun ribbons were characterized by differential scanning calorimetry (DSC), X-ray diffractometry (XRD) through Cu-Kα ( λ = 1.54 A) and synchrotron radiation ( λ = 1.77 A) and transmission electron microscopy (TEM). Soft magnetic properties were measured through the hysteresis loop tracer. In-situ XRD through synchrotron radiation was very accurate in phase identification. Fe 73− x Nb x Al 4 Si 3 B 20 ( x = 5, 10) alloys showed the possibility of forming ferromagnetic amorphous alloys composed of commercial Fe-based master alloys with fine nanocrystalline structure and good soft magnetic properties.