Consider the precipitation of B-rich β from a supersaturated A-rich α solid solution. Which among the following will lead to the creation of activation energy barrier?

Consider the precipitation of B-rich β from a supersaturated A-rich α solid solution. Which among the following will lead to the creation of activation energy barrier? Correct Answer Creation of α/β interface

Here the first step in the for the nucleation of β is that the B-atoms within the α matrix must first diffuse together and they try to form a small volume with the β composition, and then, when its necessary, the atoms must reorder or rearrange themselves into the crystal structure β . Then the α/β interface must be created during the process with the liquid->solid transformation, this leads to an activation energy barrier.