Lightweight aluminum alloy profile

Abstract

The invention discloses a lightweight aluminum alloy profile. The lightweight aluminum alloy profile comprises the following components of, in percentage by weight, copper, magnesium, silicon, zinc, lithium, manganese, titanium, vanadium, boron, nickel, chromium, iron, rare earth metals, and and the balance aluminum and inevitable impurities, wherein the rare earth elements are any one or more mixtures of lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium. According to the lightweight aluminum alloy profile, the aluminum is taken as a main raw material, various metal materials are added, the manufactured aluminum alloy is light in weight, so that lightweight of the material is achieved; by adding the copper into the aluminum alloy, the mechanical property of the aluminum alloy can be improved, and the machinability of the aluminum alloy becomes better; and by adding the silicon into the aluminum alloy, the fluidity of the aluminum alloy during casting can be improved, best fluidity is obtained from eutectic to hypereutectic, and meanwhile, the tensile strength, the hardness, the machinability and the strength at high temperature of the aluminum alloy can be improved.

Description

Technical field [0001] The invention relates to the technical field of aluminum alloy profiles, in particular to a lightweight aluminum alloy profile. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and it has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industries. With the rapid development of industrial economy, the demand for aluminum alloy welded structural parts is increasing, and the weldability of aluminum alloy is also studied in depth. Aluminum alloy is currently the most used alloy. Aluminum alloy has low density but relatively high strength, which is close to or exceeds that of high-quality steel. It has good plasticity and can be processed into various profiles. It has excellent electrical conductivity, thermal conductivity and corrosion resistance. It is widely used in industry and its usage is second only to steel. . [0003] However, ...

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Problems solved by technology

[0003] However, the existing aluminum alloys have relatively single functions. Although the hardness is high, the plasticity is poor, the corrosion resistance is poor, the high temperature softens quickly, the cracks are many, the elongation is poor, and the hardness and strength cannot have a greater breakthrough, resulting in aluminum alloy profiles. After using for a period of time, due to its insufficient strength, it needs to be replaced regularly, so that the aluminum alloy consumables will increase, which is not energy-saving and environmentally friendly.