Heat treatment of iron based melts before quenching

Kinematic viscosity v. magnetic susceptibility chi and surface tension sigm a of the Fe85B15 and Fe64Co21B15 liquid alloys were measured as functions o f temperature. Pronounced anomalies on the nu (T) and sigma (T) curves conf irm the presence of structural transformations in the melts at the temperat ures, which are specific for each composition. Three series of amorphous ri bbons for each alloy composition were prepared using different modes of the rmal treatment of tile initial melt. Their properties were investigated. Th e results evidence the effect of the initial melt structure on those proper ties of the amorphous ribbons, which depend on the scale of microinhomogene ity. This correlation is discussed within the concept of metastable microhe terogeneity of liquid metallic solutions. (C) 2001 Published by Elsevier Sc ience B.V.