Relationship between grain

The relationship between the average mean grain boundary curvature,H, and the mean linear grain intercept, λ, has been experimentally determined for aluminum. The ratioH/λ - 1 = 0.31 was found to remain constant throughout grain growth. This value yields a driving pressure for grain growth approximately three times smaller than that derived by conventional modeling and yields realistic results in models of particle- or pore-inhibited grain growth.