Cold-rolling and annealing of amorphous ribbons

摘要: Cold-rolling of Fe 40 Ni P 14 B 6 amorphous alloy ribbon results in a large increase coercive force and decrease magnetization low fields. It is suggested that these changes are the result both sliplike structures developed by rolling strain-magnetostriction induced anisotropy. On annealing rolled to temperatures below crystallization temperature, magnetic properties recover values obtained on as-cast ribbon, but higher required. The showed no evidence for structural high resolution electron micrographs; x-ray diffraction patterns change width or position diffuse rings; glass remained unchanged. However, small angle scattering intensity at angles, stress relief measurements stress-relief rate. Both ribbons when annealed even within few degrees start peaks, heat crystallization, transition, temperature. annealing, increased, rate decreased. qualitatively interpreted as being due removal nuclei their development during annealing. discussed terms short-range atomic order.