Rapidly solidified alloys made by chill block melt-spinning processes

Abstract

Rapidly solidified metals and alloys prepared by a variety of processing techniques have held great fundamental and technological promise since their discovery. Chill block melt-spinning (CBMS) processes are used to make rapidly solidified microcrystalline and amorphous alloy ribbon, flake, etc. Fundamentals of CBMS processes and the rapidly solidified products which are formed are discussed in the light of recent advances. Special regard is given to ribbon geometric defects (edge serrations, surface asperities, etc.). Photomicrographs of CBMS ribbon solidification microstructures are used to compare local solidification rates, especially in the vicinity of ribbon defects.