Grain curvature measurements: A comparison with geometrical models

Geometrical models relating average grain, grain edge and grain boundary curvature to the mean intercept length obtained in previous work [P.R. Rios, G.S. Fonseca, Scripta Mater. 52 (2005) 893] are shown to be in broad agreement with experimental data ranging over two orders of magnitude obtained from a variety of metallic polycrystals. The behavior of the polycrystalline materials analyzed here is discussed with reference to the topological requirements constraining polycrystalline networks.