RELIEF TRANSFORMATION OF Ni-BASED METALLIC GLASS RIBBON UPON ANNEALING IN β -RELAXATION REGION

Abstract

The lack of ductility is known to be one of the major drawbacks of amorphous state. Recently, an increase in the tensile strength and ductility was found in the [Formula: see text][Formula: see text][Formula: see text][Formula: see text][Formula: see text][Formula: see text][Formula: see text]B2 metal glass ribbon pre-annealed at [Formula: see text]-relaxation temperature. This paper analyzes the surface relief transformation observed during this process and the nature of separate inhomogeneities. The most significant effect is a flattening of the surface relief. This case was confirmed by statistical processing. Thus, the surface relief change was shown to be a clear indicator of structure relaxation process, that occurs in a metal glass ribbon well below its crystallization.