Effect of Equal Channel Angular Rolling Process on the Fracture Mechanisms of Al-7057 and Al-5052 Alloys

Abstract

AbstractFracture is one of the main criteria in designing industrial structures that its exact comprehension is highly significant in new sciences. This study analyzes the effect of equal channel angular rolling (ECAR) process on fracture mechanics in Al-7075 alloy ECARed through two routes of A and C and in Al-5052 alloy ECARed through the route of C. The results of analyzing fracture surfaces of samples, using scanning electron microscope, indicate that fracture has been ductile in samples without application of the process, on which a combination of shear and ductile fracture appeared after application. Moreover, it was observed that ECARed Al-7075 samples in route A have been fractured more in comparison with ECARed samples in route C. Also, the yield and tensile strengths increased and elongation decreased with increasing the number of passes in each pair of sheet.\n