Abstract: The crystallization process of amorphous Fe₇₇Cr₇B₁₆ was investigated through X-ray diffraction and TEM. Samples were annealed at temperatures varying from 80 to 510⁰C for 15 minutes. For all samples the Curie temperatures (Tc) were measured. It was shown that the crystallization is a nucleation and growth process for amorphous Fe₇₇Cr₇B₁₆ and the logarithm of crystalline fraction increases linearly with increasing annealing temperature. It was found that Tc of amorphous phase remains unchanged at low annealing temperature, but raises gradually with increase of the crystallization fraction.