Investigation of Microstructure and Mechanical properties for Multi-layered Al/Cu/Mg Composite Produced by Cold Roll Bonding

In the present study, Al/Cu/Mg layered composite was produced through cold roll bonding (CRB). Also, mechanical properties, fractography, and microstructure were investigated through uniaxial tensile test, microhardness, scanning electron and optic microscope. Results of carried out tests, showed the value of tensile strength and microhardness for Al/Cu/Mg layered composite. Comparing to initial Al 1050, pure Cu and Mg AZ31B, the value of tensile strength increased. The main cause of this increase was applying high strain and cold working. Value of tensile strength for Al/Cu/Mg layered composite received 220.3MPa that compared to initial Al 1050 and pure Cu and Mg AZ31B, enhanced 144%, 23%, and 29%, respectively. Results of SEM demonstrated that ductile fracture mechanism governed for Al and Cu layers, but fracture surface of Mg layer was a brittle fracture.