Hot and cold rolling behavior of aa5083 aluminium alloy

Abstract

This paper deals with the investigation of the thermomechanical processing of AA5083 Aluminium alloy sheet of thickness 3 mm to develop a fine-grained structure sheet for automobile body structure and general engineering structure. The as-received 3 mm sheet was rolled in hot and cold conditions. In hot and cold rolling, 3 mm sheet was subjected to reduction in thickness to 1.57 mm. The proof stress, ultimate tensile stress and % elongation was found out. The non-linear plastic region clearly depicted that true stress increased with true strain. This clearly indicated strain hardening behavior with a coefficient (n) 0.18–0.11. At lower % of the reduction, the coefficient of friction (µ) was in the range 0.06–0.09, and at higher, µ is increased to 0.11–0.15. Electron backscattered diffraction analysis was carried out to study the microscopic grain orientation. The aspect ratio of the cold-deformed grains is high as compared to hot rolled samples.