Evolution of dislocation cell microstructures during severe plastic deformation was analyzed by using a modified kinetic dislocation model based upon the 2-dimensional approach of Estrin et alia. The proposed model simulated decreasing dislocation density after a maximum point and increasing misorientation angle with strain, which fitted well with the experimental results.

Kinetic Dislocation Model of Microstructure Evolution during Severe Plastic Deformation. N.A.Enikeev, H.S.Kim, I.V.Alexandrov: Materials Science and Engineering A, 2007, 460-461, 619-23