The evolution of the misorientation spectrum during cold deformation via uniaxial tension was analyzed. The initial stage of plastic flow (true strain e ~ 0.1) was characterized by the intense formation of low-angle boundaries. The axes of rotation of most low-angle boundaries were close to <001>. This fact could be treated as being a consequence of predominantly prismatic slip during plastic deformation. An increase in strain to e ~ 0.5 and ~1.0 was accompanied by a gradual increase in the mean misorientation angle of the low-angle boundaries and by an increase in the fraction of high-angle boundaries. Twinning occurred over the entire deformation range under study: twinning on the {112}<¯1¯13> system was predominant in the initial stage, and twinning on the {102}<¯2¯13> system was predominant in the final stage. It was found that the misorientation spectrum of high-angle boundaries forming during deformation was dominated by 15°, 30° and 90° boundaries.

Evolution of Dislocation Boundaries during Cold Deformation of Microcrystalline Titanium. S.Y.Mironov, M.M.Myshlyaev: Physics of the Solid State, 2007, 49[5], 858-64