Mechanical behavior and crystallization features of amorphous alloys based on cobalt and iron after annealing

Abstract The sequence of structural transformations of amorphous alloys Fe53.3Ni26.5B20.2 and Co28.2Fe38.9Cr15.4Si0.3B17.2 during heat treatment in a wide temperature range was studied by transmission electron microscopy and differential scanning calorimetry. The response of mechanical properties (plasticity, hardness, crack resistance) during transition from an amorphous to a crystalline state was investigated. The nature of discovered embrittlement phenomenon and plasticizing effect in amorphous alloys during annealing was discussed.