Corrosion-resistant 6082 aluminum alloy material and casting process thereof

Abstract

The invention belongs to the technical field of wrought aluminum alloy material preparation, and particularly relates to a corrosion-resistant 6082 aluminum alloy material and a casting process thereof. The corrosion-resistant 6082 aluminum alloy material disclosed by the invention comprises the following components in percentage by mass: 0.78 to 0.88 percent of silicon, less than or equal to 0.15 percent of iron, less than or equal to 0.005 percent of copper, 0.75 to 0.85 percent of magnesium, 0.5 to 0.6 percent of manganese, 0.1 to 0.16 percent of chromium, 0.02 to 0.05percent of titanium, and the balance of aluminum and inevitable impurities. The 6082 aluminum alloy material provided by the invention is excellent in casting performance and high in universality and can be consistent with an existing 6082 smelting and casting process, the prepared 6082 aluminum alloy material is excellent in extrusion performance and small in extrusion resistance, and the service life of a mold is long. After the aluminum alloy material is extruded and subjected to T4 stabilization treatment, the tensile strength is larger than or equal to 270 MPa, the yield strength is larger than or equal to 175 MPa, the ductility is larger than or equal to 17 percent, the intergranular corrosion depth is smaller than or equal to 50 microns, and laminar corrosion is avoided, so that follow-up forging machining is facilitated; and the forged T6 performance requirements are as follows: the tensile strength is greater than or equal to 355MPa, the yield strength is greater than or equal to 325MPa, and the ductility is greater than or equal to 5 percent, so that the requirements of customers can be met.

Description

technical field [0001] The invention belongs to the technical field of preparation of deformed aluminum alloy materials, and in particular relates to a corrosion-resistant 6082 aluminum alloy material and a melting and casting process thereof. Background technique [0002] With the requirements for energy saving, environmental protection, lightweight and high mobility of automobiles, the lightweight of automobiles is developing rapidly. Aluminum alloy has the characteristics of moderate strength, light weight and easy forming, which is suitable for lightweight design of automobiles. For the consideration of strong plasticity and safety, the connecting rod of the automobile chassis needs to be made of 6082 aluminum alloy. At present, the performance requirements of the customer for the 6082 aluminum alloy are as follows: The performance requirements of the customer for T4 after the stabilization treatment of the 6082 aluminum alloy before forging : Tensile strength ≥ 270MPa,...

AI Technical Summary

Problems solved by technology

At present, our ordinary 6082 alloy cannot meet the above requirements, and a new 6082 alloy needs to be invented to meet the above applications

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