Effect of Sr-P Interaction on the Microstructure and Tensile Properties of A413.0 Type Alloys

Figure 3

Morphology of the eutectic Si particles in the as cast condition for A413 alloy containing (a) 200 ppm Sr; note the precipitation of α-Fe within the α-Al dendrite; (b) 340 ppm Sr; (c) 103 ppm Sr + 53 ppm P; and (d) 56 ppm Sr + 56 ppm P (see Table 3).

(a)

(b)

(c)

(d)