Effect of Aluminum Addition on the Microstructure, Tensile Properties, and Fractography of Cast Mg-Based Alloys

Figure 1

(a) Mild steel mold with copper base and casting for microstructure examination

(b) Schematic diagram of the mold used (dimensions are in inches)

(c) Line intercept method used for the measurement of grain size

(d) (i) Tensile test bar casting obtained from ASTM B-108 permanent mold and (ii) schematic of the tensile test bar (all dimensions are in mm)