MATERIALS SCIENCE IMPURITIES EFFECTS ON THE MECHANISMS OF RECRYSTALLIZATION

Within the framework of project OPEFIC partly subsidized by the French ministry of research, the mechanisms of recrystallization in cold wire-drawn copper were finely studied in order to understand how the presence of very low content of impurities (sulphur in particular) can delay the recrystallization. After plastic deformation, the quantity of stored energy, mainly in dislocations form, is a parameter determining because it is the driving force of the static recrystallization process [1-4]. This stored energy is related to many parameters such as the material type, the deformation mode, temperature and level, the crystallographic orientation, the previous deformation crystallographic texture, etc