Abstract
Assuming an anisotropic factor for geometrical grain microstructure, known as the Voronoi or Johnson-Mehl model, several grain microstructures have been simulated in two dimensions employing nucleation seeds that are assumed to be elliptical and polygon like shapes. By varying the shape of these seeds, six different microstructures have been generated based on growth and impingement model in both simultaneous and continuous nucleation cases. In addition, morphology such as the aspect ratio distribution, grain size distribution and number of grain edges in each case have been analyzed and are correlated qualitatively.
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