Figure 3
(a) A proton radiography image (Figure 2) of the solidification structure and (b,c) corresponding post-mortem scanning electron microscopy of the indicated regions that highlight the In-rich boundaries and regions that exist within the colonies of the solidified structure.
In (a), the higher density In-rich boundaries appear dark, whereas the In-rich boundaries and regions appear bright in (b,c). The In-rich boundaries and regions in (b) and (c) contain a fine-scale Al-rich (dark) phase.
