Semisolid forming (SSF) is a combined forming method for alloys; this method utilises the advantages of both
casting and forging processes in order to form a semisolid slurry, which is characterised by a distinct boundary
between the solid and liquid states (a semisolid method results in coexisting solid and liquid regions, as shown in
Fig. 1). SSF is a near-net-shape manufacturing process that is performed on metallic alloys in the semisolid state.
The alloy subjected to SSF must possess an appreciable melting range, as it enhances the formation of a
microstructure that ideally consists of primary non-dendritic metal spheroids in a liquid-phase matrix, as shown in