Spheroidization and Coarsening of Eutectic Si Particles in Al-Si-Based Alloys

Figure 8

Optical microstructures of 319 alloy: (a) as-cast, (b) SHT for 24 h ( fragmentation in black circle), (c) Sr-modified alloy-as-cast, and (d) SHT for 24 h.

(a)

(b)

(c)

(d)