Rheo-diecasting of Al–Si–Pb immiscible alloys

Immiscible Al–Si–Pb alloys are successfully produced using the newly developed rheo-diecasting process (RDC). The microstructure of RDC Al–Si–Pb alloys is characterised by spherical and fine Pb particles dispersed uniformly in the Al–Si alloy matrix. The discussion focuses on the mechanism of the RDC process for immiscible alloys.