2-series aluminum alloy

A technology of aluminum alloy and aluminum alloy ingot casting, which is applied in the field of metal materials, can solve problems such as lack of systematicness, and achieve the effect of improving mechanical properties, good fatigue properties, mechanical properties, and internal organization

Inactive Publication Date: 2015-04-22
SOUTHWEST ALUMINUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the many grades of aluminum alloys, most of the aluminum alloys for aircraft are 2xxx alloys. However, due to the confidentiality of foreign technologies and the lack of systematic research on domestic aircraft aluminum alloy products, there is a gap in the performance, variety, specifications, production The level cannot fully meet the requirements for the use of airframe materials, and its mechanical properties need to be further improved. It is necessary to develop new alloys that can meet the requirements of the airframe on the basis of traditional 2xxx alloys.

Method used

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Experimental program
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Effect test

preparation example Construction

[0035] The present invention has no special limitation on the preparation method of the aluminum alloy, and the present invention preferably adopts the following specific methods for preparation,

[0036] First, the aluminum alloy ingot is subjected to homogenization heat treatment, and then cooled to obtain an aluminum alloy ingot with homogenization heat treatment;

[0037] Then, the homogenized heat-treated aluminum alloy ingot is rolled, and solution quenched in a hovering furnace to obtain a 2-series aluminum alloy.

[0038] All raw materials in the present invention have no particular limitation on their sources, they can be purchased from the market or prepared according to conventional methods well known to those skilled in the art.

[0039] All the raw materials in the present invention have no special limitation on their purity, and the present invention preferably adopts analytical purity.

[0040] In the present invention, the aluminum alloy ingot is first subject...

Embodiment 1

[0049] 1.1 After the aluminum alloy ingot is milled, the aluminum alloy ingot is obtained, and the aluminum alloy ingot is heated to a soaking temperature of 450°C for homogenization heat treatment, and then rapid water cooling is started after 15 hours, and cooled to After 30°C, an aluminum alloy ingot after homogenization heat treatment is obtained.

[0050] 1.2 Roll the homogenized aluminum alloy ingot obtained in 1.1 at a temperature of 300°C, and then send the rolled aluminum alloy ingot into the air cushion furnace at a temperature of 495°C and a speed of 5 m / min, after solution quenching, a 2-series aluminum alloy is obtained.

[0051] 1.3 After shearing, straightening and sawing the 2-series aluminum alloy obtained in 1.2, a finished 2-series aluminum alloy is obtained.

[0052] According to the national standard and industry standard, the 2-series aluminum alloy obtained in the above steps was tested. The composition of the 2024 aluminum alloy prepared in this exampl...

Embodiment 2

[0054] 1.1 After the aluminum alloy ingot is milled, the aluminum alloy ingot is obtained, and the aluminum alloy ingot is heated to a soaking temperature of 520°C for homogenization heat treatment, and then rapid water cooling is started after 20 hours, and cooled to After 30°C, an aluminum alloy ingot after homogenization heat treatment is obtained.

[0055] 1.2 Roll the homogenized aluminum alloy ingot obtained in 1.1 at a temperature of 300°C, and then send the rolled aluminum alloy ingot into the air cushion furnace at a temperature of 505°C and a speed of 15 After the condition of m / min, a 2-series aluminum alloy is obtained.

[0056] 1.3 After shearing, straightening and sawing the 2-series aluminum alloy obtained in 1.2, a finished 2-series aluminum alloy is obtained.

[0057] According to the national standard and industry standard, the 2-series aluminum alloy obtained in the above steps was tested, and the composition of the 2524 aluminum alloy prepared in this exam...

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Abstract

The invention provides 2-series aluminum alloy which consists of 0.06-0.5wt% of Fe, 0.12-0.5wt% of Si, 1.2-1.8wt% of Mg, 3.8-4.9wt% of Cu, 0.3-0.9wt% of Mn and the balance of aluminum. The 2-series aluminum alloy provided by the invention is applicable to the preparation of 2xxx aviation aluminum alloy; and the aluminum alloy provided by the invention is relatively low in crack propagation rate and relatively good in fatigue property and mechanical property.

Description

technical field [0001] The invention belongs to the technical field of metal materials, in particular to a 2-series aluminum alloy. Background technique [0002] Aluminum alloy is an alloy based on aluminum, the main alloying elements are copper, silicon, magnesium, zinc and manganese. Aluminum alloy is the most widely used non-ferrous metal structural material in industry. At present, aluminum alloy is one of the main types of aluminum alloy profiles. Its production method is through aluminum alloy or direct cold casting into ingots, or continuous casting into thick strips, followed by hot rolling into a predetermined thickness, and then a separate Process After the strip is cold-rolled to the final thickness, heat treatment is carried out to improve the mechanical properties and corrosion resistance of the aluminum alloy, improve its processing performance, and obtain dimensional stability. [0003] The heat treatment process of aluminum alloy can be divided into anneali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/16C22F1/057
CPCC22C21/16C22C21/14C22F1/057
Inventor 代陈绪
Owner SOUTHWEST ALUMINUM GRP
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