Stability of Crystallographic Orientations in Equal Channel Angular Extrusion of HCP materials: Application to Texture Analysis in Titanium
A numerical analysis of orientation stability is conducted for equal channel angular extrusion (ECAE) of hexagonal close-packed (hcp) materials based on lattice rotations from rate-sensitive crystal plasticity simulations. The relatively stable orientations associated with five slip modes are identified and then applied to interpret the characteristics of texture evolution in ECAE-processed titanium. The results indicate that during ECAE deformation, the slip plane and slip direction tend to rotate respectively towards the macroscopic simple shear plane and shear direction.
Young Won Chang, Nack J. Kim and Chong Soo Lee
S. Y. Li, "Stability of Crystallographic Orientations in Equal Channel Angular Extrusion of HCP materials: Application to Texture Analysis in Titanium", Materials Science Forum, Vols. 561-565, pp. 1979-1982, 2007