High temperature tensile properties of as-cast Mg–Al–Ca alloys

In order to choose the appropriate process parameters for further thermo-mechanical processes, high temperature tensile tests of as-cast Mg–Al–Ca alloys containing 1, 4 and 7% of total amount of Al and Ca (denoted as AX1, AX4 and AX7, respectively), where Al:Ca = 29:26, were examined. During the tensile test, the Mg2Ca and (Mg, Al)2Ca compounds contribute to not only grain refining but also become crack initiation sites and lower the ductility,...