Review on Vertical Twin-Roll Strip Casting: A Key Technology for Quality Strips

Figure 4

Microstructure of the as-cast sample along the thickness direction at different roll speeds: (a) 100 rpm, (b) 200 rpm, (c) 300 rpm, (d) 400 rpm, and (e) 500 rpm.

(a)

(b)

(c)

(d)

(e)