Evolution of perimeter fraction during a phase transformation Original Research Article

Analytical expressions are obtained for the temporal evolution of the perimeter fraction during a phase transformation for both site-saturated nucleation and nucleation at a constant rate. In the former case, these expressions are then validated by a direct comparison with the results of two-dimensional computer simulations of nucleation and growth to impingement. Finally, the role of the evolving perimeter fraction on the energetics of transforming systems is discussed.