Evolution of Microstructure and Microsegregation of Ti-45Al-8Nb Alloy during Directional Solidification

Figure 6

Measured concentration profiles as a function of solid fraction: (a) Al in mushy zone; (b) Nb in mushy zone; (c) Al in columnar zone; (d) Nb in columnar grains; (e) Al in the two sections of 30 μm/s withdrawn ingot; (f) Al in the two sections of 200 μm/s withdrawn ingot.

(a)

(b)

(c)

(d)

(e)

(f)