APPARATUS AND METHOD OF PRODUCING A FINE GRAINED METAL SHEET FOR FORMING NET-SHAPE COMPONENTS

摘要

A method and apparatus for producing ultra-fine grained metal alloy preferably magnesium material sheets. The apparatus molds and rapidly solidifies a metal alloy material to form a fine grain precursor. The precursor is then subjected to deformation strains that alter the grain structure of the precursor so as to form a ultra fine grained structure in sheet form. The sheet form may then be subjected to superplastic forming to form a net shaped article.