Abstract: Aiming at the stainless steel wire mesh reinforced aluminium composite plate fabricated by cold rolling process, the evolution of the microstructure of the composite interface with reduction ratio changing is observed by metallographic microscope, and the mechanical properties of the composite plate is investigated by tensile testing machine. The results show that with the increasing of reduction ratio, the boning interface changes from the original mechanical occluding between wire mesh and aluminium plate to the local point welding between wire mesh's overlapping point and aluminium plate, then it turns to the surface welding of wire mesh's overlapping point and aluminium plate as well as the local point welding of not overlapping point area's wire and aluminium plate. When the reduction ratio reaches 52.8%, comprehensive welding is formed between wire mesh and aluminium plate as well as the bonding between aluminium plate and aluminium plate. The test results of composite plate's mechanical performance show that in a certain range, the tensile strength and specific tensile strength of the composite plate increase with the increasing of reduction ratio and number of wire mesh, and both of them show a downward trend with the increasing of the initial thickness of aluminium plate. Steel wire mesh reinforcement effect is small when the aluminium plate's initial thickness is more than 2 mm. Compared to the unreinforced Al/Al composite plate, tensile strength of the composite plate reinforced with steel wire mesh placed at different orientations is higher. The tensile strength of 0° steel wire reinforced composite plate increases by 22.5% and the tensile strength of 45° steel wire reinforced composite plate increases by 34.2%. But percent elongation is lower, and percent elongation of 45° steel wire reinforced composite plate decreases less.

Key words: cold rolling, composite interface, specific tensile strength, stainless steel wire mesh reinforced aluminium composite plate, tensile strength