Preparation method of light-weight high-strength nano-modified aluminum alloy material

Abstract

The invention discloses a preparation method of a light-weight and high-strength nano-modified aluminum alloy material, which comprises the following steps: step 1, preparing Mg-Si coated nanotubes, mixing magnesium powder, silicon powder and carbon nanotubes, and then mechanically grinding, so that the silicon powder and the carbon nanotubes are fully mixed, and constructing a core-shell structure to obtain magnesium-silicon coated carbon nanotubes; and 2, preparing a nano modified aluminum alloy material: adding the magnesium-silicon coated carbon nanotubes obtained in the step 1) into an aluminum alloy, stirring to uniformly disperse the added silicon coated carbon nanotubes in an aluminum alloy matrix, and then performing heat treatment casting to obtain a nano modified aluminum alloy material cast rod. According to the invention, the Al-Mg-Si alloy is adopted, so that the strength of the alloy fitting is greatly improved. Compared with a traditional malleable cast iron material for electric power fittings, the nano-modified aluminum alloy material provided by the invention has the advantages of light weight, high strength and no zinc plating.

Description

technical field [0001] The invention relates to a method for preparing a lightweight and high-strength nano-modified aluminum alloy material, and belongs to the technical field of aluminum-based composite materials and electric fittings preparation. Background technique [0002] At present, cast iron fittings are still used on a large scale in my country's power distribution lines, which cause huge power loss at all times during operation. Moreover, the difficulty of galvanizing at this stage has also affected the production and supply of cast iron fittings. Earlier in the industry, aluminum alloy was used as an energy-saving fitting material, but the strength of aluminum alloy is insufficient, which limits its promotion and use in the field of fittings. In fact, materials are the biggest bottleneck in the development of high-performance and energy-saving fittings. Contents of the invention [0003] In view of the above-mentioned problems in the prior art, the present inv...

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Problems solved by technology

[0002] At present, cast iron fittings are still used on a large scale in my country's distribution lines, which cause huge power loss at all times during operation. Moreover, the problem of difficult galvanizing at this stage has also affected the production and supply of cast iron fittings

Earlier in the industry, aluminum alloy was used as an energy-saving fitting material. However, the strength of aluminum alloy is insufficient, which limits its promotion and use in the field of fittings.