Formation of melt-extracted wire of Fe-Cu-Si-B alloy with core-wire/surface-cover-layer structure by arc-melt-type melt-extraction method

A rapidly solidified wire of Fe-Cu-Si-B alloy with a macroscopically separated structure was formed by the arc-melt-type melt-extraction method. A unique core-wire/surface-cover-layer structure composed of core Fe-Si-B-based amorphous alloy and cover Cu crystal was formed by liquid phase separation during rapid quenching of thermal melt.