Cyclic shear tests on Aluminium 3004 and 5182 alloys: macroscopic behaviour and substructural development

Cyclic shear tests with various constant strain amplitudes have been carried out to characterize the microstructural development under cyclic straining of aluminium-3004 and aluminium-5182 alloys. Substructural instabilities that occur inside the microstructure, their morphologies and crystallographies are reported. The hypothetical influence of these inhomogeneities on the observed macroscopic behaviour is discussed.