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High-strength aluminum alloy material and preparation method thereof

An aluminum alloy material and high-strength technology, applied in the field of alloy materials, can solve the problems of low tensile and yield strength and cannot meet special industries, and achieve the effects of high tensile strength, stability and high yield strength

Active Publication Date: 2018-01-26
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] As we all know, 1XXX and 3XXX have the best elongation properties of aluminum alloy materials, but the general tensile and yield strength of 1XXX and 3XXX are low, which limits the application of this material
For the aluminum extrusion profile industry, 6XXX alloys undoubtedly have the best comprehensive performance, but the elongation of 6XXX alloys is generally only about 10%, which is increasingly unable to meet the needs of special industries.

Method used

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  • High-strength aluminum alloy material and preparation method thereof

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Effect test

Embodiment 1

[0021] In the embodiment of the present invention, the high-strength aluminum alloy material is composed of the following components by mass percentage: 0.003% cesium, 1.17% silver, 3.38% sodium chloride, 4.59% chromium, and the balance is aluminum.

[0022] The preparation method of the high-strength aluminum alloy material consists of the following steps:

[0023] 1) take sodium chloride according to mass percentage and dissolve in water, be mixed with the sodium chloride solution that concentration is 0.5mol / L, then put aluminum, chromium and sodium chloride solution into reaction kettle and seal according to mass percentage, in Raise the temperature to 380°C within 30 minutes, and stir at this temperature for 10 minutes, then use a vacuum pump to evacuate the reactor, and continue to heat at this temperature for 15 minutes; the processed mixture A is obtained;

[0024] 2) Put mixture A into a melting furnace and raise the temperature to 690° C. for smelting for 30 minutes ...

Embodiment 2

[0030] In the embodiment of the present invention, the high-strength aluminum alloy material is composed of the following components in terms of mass percentage: 0.005% cesium, 1.23% silver, 3.46% sodium chloride, 4.85% chromium, and the balance is aluminum.

[0031] The preparation method of the high-strength aluminum alloy material consists of the following steps:

[0032] 1) take sodium chloride according to mass percentage and dissolve in water, be mixed with the sodium chloride solution that concentration is 0.8mol / L, then put aluminum, chromium and sodium chloride solution into reaction kettle and seal according to mass percentage, in Raise the temperature to 400°C within 40 minutes, and stir at this temperature for 20 minutes, then use a vacuum pump to evacuate the reactor, and continue to heat at this temperature for 25 minutes; the processed mixture A is obtained;

[0033] 2) Put mixture A into a melting furnace and raise the temperature to 695° C. for smelting for 35...

Embodiment 3

[0039] In the embodiment of the present invention, the high-strength aluminum alloy material is composed of the following components by mass percentage: 0.003% cesium, 1.19% silver, 3.40% sodium chloride, 4.65% chromium, and the balance is aluminum.

[0040] The preparation method of the high-strength aluminum alloy material consists of the following steps:

[0041] 1) take sodium chloride according to mass percentage and dissolve in water, be mixed with the sodium chloride solution that concentration is 0.6mol / L, put aluminum, chromium and sodium chloride solution into reaction kettle and seal according to mass percentage then, in Heat up to 390°C within 35 minutes, and stir at this temperature for 15 minutes, then use a vacuum pump to evacuate the reactor, and continue to heat at this temperature for 20 minutes; the processed mixture A is obtained;

[0042] 2) Put mixture A into a melting furnace and raise the temperature to 692°C for 32 minutes to make mixture B;

[0043] ...

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Abstract

The invention discloses a high-strength aluminium alloy material and a preparation method thereof. The high-strength aluminium alloy material comprises components in percentage by mass as follows: 0.003%-0.005% of cesium, 1.17%-1.23% of silver, 3.38%-3.46% of sodium chloride, 4.59%-4.85% of chromium and the balance of aluminium. Aluminium, chromium and a sodium chloride solution are placed in a reaction kettle to be sealed, and a mixture A is prepared after heating treatment; after smelting, silver is added for continuous smelting, then cesium is added for continuous smelting, the mixture is placed in a resistance furnace to be evenly annealed, and then the high-strength aluminium alloy material is prepared through extrusion. According to the high-strength aluminium alloy material and the preparation method thereof, the aluminium alloy material is high in elongation, high in tensile strength and high in yield strength under the coaction of the various components and the preparation process, is equivalent to or superior to part of 1XXX and 3XXX alloys and can keep stability of mechanical properties for a long time.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to a high-strength aluminum alloy material and a preparation method thereof. Background technique [0002] Primary aluminum is collectively referred to as electrolytic aluminum in the market supply, and it is the raw material for the production of aluminum and aluminum alloy materials. Aluminum is a metal with low strength and good plasticity. In addition to the application of some pure aluminum, in order to improve the strength or comprehensive performance, it is made into an alloy. Adding an alloying element to aluminum can change its structure and properties, making it suitable for various processing materials or casting parts. Alloying elements that are often added are copper, magnesium, zinc, silicon, manganese, etc. [0003] Aluminum alloy has the characteristics of high specific strength, good formability and processing performance, and good corrosion resistance, ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/02C22F1/04
CPCC22C1/026C22C21/00C22F1/04
Inventor 陈宇强潘素平刘文辉唐思文
Owner HUNAN UNIV OF SCI & TECH