Crystallization of some amorphous metallic alloys studied by Mössbauer spectroscopy

The present work provides an analysis of crystallization processes in amorphous metallic alloys Fe₈₀Si₄Cr_1.0B₁₄ and Fe₆₇Co₁₈B₁₄Si₁. Crystallization of the first sample started at the temperature of 648 K. The fully crystalline state was observed after annealing at 748 K. We identified four sextets. One corresponds to crystalline Fe₂B and the three others to FeSi solid solution with 10 at .% of Si. Crystallization of Fe₆₇Co₁₈B₁₄Si₁ started at the temperature of 623 K. We identified two crystalline phases. The first may have its origin as (Fe_1−xCo_x)₃B, the second one may correspond to a Fe−Co solid solution with a different Co content.