Microstructure, fracture, and thermal stability of Ni–Fe–Cu–P–B two-phase amorphous composite produced from the double-chamber crucible

The purpose of the work was investigation of the final microstructure and properties of the melt-spun Ni–Fe–Cu–P–B, Ni–Fe–B, and Ni–Cu–P alloys ejected as uniform liquid from the standard single-chamber crucible and from the double-chamber crucible as flux composed of the two Ni–Fe–B and Ni–Cu–P liquids cooled on a copper roller before formation of a uniform mixture. The methods applied in this study for microstructural investigations include scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Mössbauer spectroscopy. Thermal stability of the melt-spun alloys was tested using differential scanning calorimetry (DSC) and tensile test were performed. The results of the investigations are described and discussed in terms of the unique features of the two component melt spinning (TCMS) amorphous microstructure. •We applied a new method of production two phase amorphous composite.•We obtained wood-like morphology of the Ni–Fe–B/Ni–Cu–P amorphous alloy.•We observed coincidence between boundaries and the fracture pattern in TCMS alloy.•We observed that thermal properties of the TCMS alloy are inherited from precursors.