Taylor principles indicate that the Taylor strain tensor is identical to the macroscopic strain tensor during plastic deformation and prevails everywhere inside polycrystalline aggregates, in which real grain behaviors generally differ. These principles have been modified in many deformation models while considering strain and stress equilibria in local areas, e.g., grains, grain pairs or grain clusters. However, the Taylor strain tensor is still valid in the surrounding matrix of local areas. In this paper, a reaction stress model based on intergranular mechanical interactions is proposed for rolling deformation caused by penetrating slips and additional local slips while keeping reaction shear stresses below certain top limits. Both stress and strain equilibria are reached in entire rolling sheets in the model, and the same Taylor texture is predicted without the Taylor strain tensor anywhere inside the polycrystalline matrix, regardless if the isotropic matrix is rigid or elastic. Rolling-texture formation in experimental polycrystalline metals could be simulated based on the model if the relaxation effects of additional slips on reducing the top limits of reaction shear stresses are included.

With the help of electron back scattering diffraction techniques and field emission microscope, the misorientation and the precipitation environment of Goss grains in conventional grain-oriented steel were observed and investigated at the initial stage of secondary recrystallization. It reveals that the abnormal Goss grains have a high fraction of high angle boundaries ranging from 25 to 40 deg. The most important observation is that some of {110}<001> grains in matrix indicated higher particle density than their neighbor grains during final annealing at 875°C before secondary recrystallization, which could create a favorable environment for their abnormal grain growth. Based on misorientation and precipitation results, the abnormal growth mechanism of Goss grains was sketched.