Investigation of Ductile Fracture of Nanostructured Al-6082 Material

In this paper we are going to investigate the ductile fracture in cold forming ofnanostructured Al - 6082 alloy material during axi-symmetric collar(flanged) tests and cylindrical upsetting tests by using eight types offracture criteria. The material of specimens were taken out of ECAP was made by one, four,and eight passes (route C) in three perpendicular axes. The material hasultrafine grain size and an anisotropic behaviour. A simple yield criterionand material law are used to describe the plastic deformation of thenanostructured material. The collar tests and cylindrical upsetting testsproduced typical ductile fractures in all types of specimens.