Effect of Mg Content and Heat Treatment on the Mechanical Properties of Low Pressure Die-Cast 380 Alloy

Figure 14

Fracture surface of fatigue DCM5 samples following aging at (a and b) 155°C for 20 h and (c and d) 220°C for 25 h. The white arrows in (a) and (c) refer to crack initiation sites.

(a)

(b)

(c)

(d)