A method of forming dense ingots having a fine equiaxed grain structure

摘要

A method of forming a fine grained equiaxed ingot by melting metal and placing it in a mold (12) having a restriction (22) at the entrance disposed to solidify the metal in the entrance to the mold prior to complete solidification of the metal in the mold such that a shrinkage void (18) is formed below the entrance to the mold. The ingot is then hot isostatically pressed (HIPped) to fully densify the ingot and eliminate the shrinkage void.