(a)
(b)
(c)
(d)
(e)
(f)
Figure 5:
Microstructure of Al–Mg
2
Si samples before and after heat-treatment in (a) 15% (as cast) (b) 15% (heat treated) (c) 20% (as cast) (d) 20% (heat treated) (e) 25% (as-cast) (f) 25% (heat treated).