Aluminum alloy product suitable for structure and function integration, and preparation method thereof

A technology of aluminum alloy and products, applied in the field of aluminum alloy materials

Active Publication Date: 2013-08-07
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is difficult for existing materials to meet these special requirements at the same time

Method used

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  • Aluminum alloy product suitable for structure and function integration, and preparation method thereof
  • Aluminum alloy product suitable for structure and function integration, and preparation method thereof
  • Aluminum alloy product suitable for structure and function integration, and preparation method thereof

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preparation example Construction

[0071] The present invention also relates to a preparation method for producing the aluminum alloy product, wherein the aluminum alloy product includes a deformed aluminum alloy product and an aluminum alloy cast product. The process of deforming and processing aluminum alloy products can be described as "alloy preparation and melting-ingot preparation by semi-continuous casting-ingot homogenization heat treatment-deformation processing (extrusion, rolling, forging, drawing) to obtain deformed products- Solution treatment and stress relief treatment - aging treatment - finished product". The manufacturing process of the aluminum alloy casting product can be described as "alloy preparation and smelting-die casting forming-solution treatment-aging treatment-finished product". It includes the following steps:

[0072] (1) making semi-continuous casting ingots or mold castings as described in the present invention;

[0073] (2) Carry out homogenization heat treatment to gained i...

Embodiment 1

[0088] Alloys were prepared on a laboratory scale to demonstrate the principles of the invention. The composition of the alloy is shown in Table 1. The round ingot of Ф210mm is prepared by the well-known methods of alloy melting, degassing, inclusion removal, and semi-continuous casting. The homogenization annealing system of the ingot is selected as (440±5°C / 12h)+(472±3 °C / 24h), followed by slow cooling in air. After peeling and sawing, an extruded billet of Ф190×400mm is obtained. The extruded billet was preheated at 420±10°C for 4 hours, and then extruded on an 800-ton extruder to finally obtain extruded rod products with a size of Ф20mm, and the extrusion ratio was 16.7. In order to better and accurately control the surface quality and dimensional tolerance of the deformed parts, combined with the optimized design of the extrusion tool and mold, and the precise control of the extrusion speed. After sawing these alloy extruded rods to length, solution heat treatment is c...

Embodiment 2

[0097] A batch of round ingots with a diameter of Ф380 mm were prepared by industrial tests through the well-known methods of alloy melting, degassing, inclusion removal, and semi-continuous casting. The composition of the ingots is shown in Table 3. The homogenization annealing system of the ingot is selected as (440±5°C / 12h)+(472±3°C / 24h), followed by slow cooling in air. After peeling and sawing, an extruded billet of Ф360×600mm is obtained.

[0098] Table 3 Alloy composition of industrial test

[0099]

[0100] Preheat the extruded billet at 420±10°C for 4 hours, and then extrude it on a 1600-ton extruder according to different extrusion models designed to obtain rod products with a specification of Ф30mm and an outer diameter of Ф36mm×wall thickness of 2.5mm Pipe products, T-shaped products with a width of 200mm × height 40mm × wall thickness 5mm. In order to better and accurately control the surface quality and dimensional tolerance of deformed parts, combined with ...

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Abstract

The invention relates to an aluminum alloy product suitable for structure and function integration, and a preparation method thereof. The aluminum alloy product comprises the components of, by weight, 5.5-10.0% of Zn, 1.5-2.8% of Mg, 1.5-2.5% of Cu, 0.01-0.50% of Cr, 0.05-0.50% of Mn, 0.01-0.20% of Zr, and balance of of Al and incidental elements and impurities. In the aluminum alloy product: (a) Zn+Mg+Cu is no lower than 10.0% and no higher than 14.0%; (b) (Zn / Mg)+Cu is no lower than 4.4 and no higher than 6.5; (c) Cr+Mn+Zr is no lower than 0.10 and no higher than 0.60; and (d) the content of Cr is no higher than that of Mn, and content of Mn is no higher than that of Cr+0.20. The aluminum alloy product has high strength, high electric conductivity, and good thermal conductivity. Also, the aluminum alloy product has low residual stress, good surface quality, and good dimensional precision. The invention also relates to a preparation method of the aluminum alloy product.

Description

technical field [0001] The technical field that the present invention relates to is aluminum alloy material, particularly the 7xxx series (Al-Zn-Mg-Cu series) aluminum alloy material that is named by the International Aluminum Association; More specifically, the present invention relates to structure function integration Aluminum alloy material products. Although the most typical application of the invention is in extruded products, it can also be applied to rolled, drawn, forged and cast products. Background technique [0002] Due to the advantages of small specific gravity, easy processing, and low cost, aluminum alloy has become the most widely used and most typical lightweight structural material among various metal structural materials. With the rapid development of science and technology, modern equipment is increasingly showing the development trend of integration and light weight, and the demand for aluminum alloy materials with integrated structure and function is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22F1/053C21D8/00
Inventor 张永安李锡武熊柏青朱宝宏李志辉王锋刘红伟
Owner GRIMAT ENG INST CO LTD
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