Effect of Melt Temperature on the Effectiveness of the Grain Refining in Al-Si Castings

Figure 16

Evolution of the grain size in A356.2 alloy: (a) no addition, (b) Al-10%Ti (0.2%Ti), (c) Al-5%Ti-1%B (0.1%Ti), and (d) Al-4%B (100 ppm B). Pouring temperature: 750°C; stirring time: 30 minutes.

(a)

(b)

(c)

(d)