The study of structure of Fe-B-P based metallic glasses

► Amorphous materials in form of ribbons were prepared by planar flow casting. ► Kinetics of crystallization was investigated by DSC and TGA. ► Samples were annealed at 773 K, bcc-Fe, Fe3B and Fe23B6 were determined by XRD. ► In situ XRD using linear heating confirmed three-stage transformation. ► Cu addition into base composition leads to more regular grain morphology.