METHOD OF PLASTIC DEFORMATION OF ALUMINUM COMPOSITE MATERIAL, APPLICATION OF ALUMINUM COMPOSITE MATERIAL AND AN ELEMENT OF A CONSTRUCTION Russian patent published in 2019 - IPC B32B15/20 B21C23/24 B32B15/01 

FIELD: metallurgy.

SUBSTANCE: invention relates to a method of plastic deformation of an aluminum composite material. Method of plastic deformation of the aluminum composite material, which has a core alloy of an aluminum alloy of the type AA6xxx and at least one outer layer of the aluminum alloy of the type AA8xxx with tensile strength R_p0,2 provided on one or both sides in a state of soft or diffusion annealing from 25 to 60 MPa, includes plastic deformation in a forming tool, and in the aluminum composite material for the plastic flow stress of the aluminum alloy core and at least one outer layer in the state of soft or diffusion annealing is really the expression k_{f, external}/ k_{f core}<0.5, where k_{f, external} - the plastic flow stress of the aluminum alloy of the outer layer in the state of soft or diffusion annealing, and k_{f core} - the plastic flow stress of the aluminum alloy core, plastic deformation is carried out through a cupping process and / or the process of stretching drawing and plastic deformation is carried out in such a way that at least in one local position in the forming tool stress τ_R of shear with friction between the tool and the aluminum composite material on the contact surface reaches stress k_Auβen of the plastic flow when shearing the outer layer of the aluminum alloy.

EFFECT: invention is directed to the creation of a material with high molding capacity and high value of relative elongation in the state T₄.

9 cl, 3 tbl, 11 dwg