A Review Study on the Main Sources of Porosity in Al-Si Cast Alloys

Figure 8

Fracture surface of fatigue tested samples: (a) presence of disconnected pores at the sample surface, (b) shrinkage porosity at the center of the samples, (c) high magnification micrographs of the dendrites in (b), (d) joining of pores during loading-loading axis is normal to the polished surface.

(a)

(b)

(c)

(d)