Comparison of the semi-solid constitutive behaviour of A356 and B206 aluminum foundry alloys

The semi-solid constitutive behaviour of two commercially important aluminum foundry alloys, AA B206 and AA A356, has been quantified using a Gleeble thermo-mechanical physical simulation system. For these tests, a series of samples were extracted from a directionally-solidified wedge casting. The samples were further classified by their microstructure, average grain size of 128, 220, or 325 μm for B206, and average secondary dendrite arm …