Rare Earth Metal-Based Intermetallics Formation in Al–Cu–Mg and Al–Si–Cu–Mg Alloys: A Metallographic Study

Figure 7

Backscattered electron images of (a) B0-based alloy; (b) B0 + 5%La; (c) La-rich platet in (b); (d) B0 + 5%La + 0.2%Ti; (e) high magnification micrograph of the gray phase circled in (d); (f) B0 + 5%Ce; (g) B0 + 5%Ce + 0.2%Ti alloys.

(a)

(b)

(c)

(d)

(e)

(f)

(g)