Fig. 4

Evolution of a precipitate, according to the classical model with elliptical anisotropy, with \(I_{\alpha \beta }=2\) in the left, and \(I_{\alpha \beta }=5\) in the right columns. In the top row, the initial setup (\(t=0\)) is shown as a red dashed line, and an intermediate state (\(t=30\)) is, respectively, shown with black solid and dashed lines, corresponding to the loci of \(\phi =0.5\), \(\phi =0.01,\) and \(\phi =0.99\). In the bottom row, the final shapes (black lines) are overlapped by the corresponding Wulff shapes (magenta lines), due to the appropriate surface energy plots (blue lines)