Crystallization Kinetics of Nd_2Fe_(14)B Phase in the Nd_(7.5)Fe_(85.9)Nb_(0.25)Dy_(0.75)B_(5.5)Cu_(0.1) Amorphous Alloy

The crystallization kinetics of Nd2Fe14B phase in the Nd7.5Fe85.9Nb0.25Dy0.75B5.5Cu0.1 amorphous alloy was investigated by differential scanning calorimetry(DSC).The results show that the peaked crystallization tempera-ture of Nd2Fe14B phase is 697.93 ℃ when the amorphous alloy is heated at rate of 10 ℃/min.The activation energy of Nd2Fe14B phase in the early stage of crystallization is 372.17 kJ/mol,and decrease with increase of its crystallized volume fraction.