Effect of Temperature and Strain on the Microstructure and Mechanical Properties of AA6061/AZ31 Laminated Composite Produced by Hot Forge Bonding

In this study, the hot forge bonding process that includes diffusion bonding and plastic deformation was used as a simple and practical method to fabricate Al/Mg laminated composites. For this purpose, the AA6061 aluminum and AZ31 magnesium alloys sheets with 1 mm thickness were stacked on each other in 5 and 9 layers. The specimens were forged by a hydraulic press at 400 and 500 degrees C under a constant load of about 100 kN with a holding time of less than 10 s. The microstructure and mechanical properties were investigated by optical microscope, scanning electron microscope, uniaxial tensile test, and microhardness test. Maximum tensile strength was obtained for the 5-layer specimen at 400 degrees C, which was 65% and 28% higher than the tensile strength of initial aluminum and magnesium alloys, respectively.