Evolution of orientation hardening in the cold rolling of an AA3003 aluminium alloy sheet

摘要

Work hardening can be studied at different scales of observation. The evolution of hardening in the cold rolling of an AA3003 aluminium alloy has been studied from X-ray crystallographic data. The hardening caused by a change in the lattice reorientation can lead to either hardening or softening of the matrix, and can be separated from the dislocation hardening at the meso-level. A physical model based on the changes in the texture coefficients of the orientation distribution function of a polycrystalline material is used to derive the orientation hardening during the course of plastic deformation.