Crystallization behaviour of Fe?(Nb,Cu)?Si?B metallic glasses

The crystallization behaviour and Curie temperatures of Fe?(Nb,Cu)?Si?B metallic glasses were studied by means of differential scanning calorimetry (DSC), thermomagnetic gravimetry (TMG) and X-ray diffraction. The agreement between the DSC and TMG results was complete. For all Fe?Si?B amorphous alloys, two-peak crystallization was observed with the primary crystallization of α-Fe(Si) followed by eutectic crystallisation. The effects of Cu and Nb additions on the crystallization behaviour and on the activation energies for each stage of the crystallization process of Fe?Si?B glass were investigated.