The deformation of a polycrystalline material leads to changes in the amount of grain surface and grain edge per unit volume. These parameters are of importance in kinetic theory since both surfaces and edges are heterogeneous nucleation sites. In the present study a method is described for calculating changes in the surface area and edge per unit volume as afunction of common deformations encountered in the production of steels. Unlike previous analyses, each grain in the undeformed material is represented by a tetrakaidecahedron, a shape which is a realistic representation of equiaxed grains. There are some interesting results which are compared with previous work.
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