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A preparation method of high-strength and stress-corrosion-resistant aluminum alloy profiles

A technology for stress corrosion resistance and aluminum alloy profiles, applied in the field of metal material processing, can solve the problems of low strength and poor intergranular corrosion resistance of aluminum alloys, and achieve improved structure, improved strength of aging alloys, and microalloying effects. improved effect

Active Publication Date: 2022-05-13
JIANGSU UNIV OF TECH
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Problems solved by technology

[0004] In order to solve the technical problems of poor intergranular corrosion resistance and low strength of aluminum alloys, a method for preparing aluminum alloy profiles with high strength and stress corrosion resistance is provided.

Method used

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  • A preparation method of high-strength and stress-corrosion-resistant aluminum alloy profiles
  • A preparation method of high-strength and stress-corrosion-resistant aluminum alloy profiles
  • A preparation method of high-strength and stress-corrosion-resistant aluminum alloy profiles

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Embodiment 1

[0030] A method for preparing a high-strength stress-corrosion-resistant aluminum alloy profile, comprising the steps of:

[0031] (1) Ingredients and smelting: select raw materials to remelt refined aluminum ingots, pure magnesium ingots, cathode copper, zinc ingots, aluminum-silicon master alloys, aluminum-manganese master alloys, aluminum-titanium master alloys, Al-10% Y alloys, Al-5 %Sc alloy and Al-10%Sr alloy, according to the weight percentage of the following elements Mg: 0.9% ~ 1.05%, Si: 0.45% ~ 0.65%, Cu: 0.15% ~ 0.30%, Y: 0.10% ~ 0.20%, Sc : 0.05%~0.15%, Sr: 0.09%~0.15%, Cr≤0.10%, Zn≤0.10%, Fe≤0.12%, Mn≤0.10%, Ti≤0.10%, total amount of impurity elements≤0.15%, balance For Al, weigh raw materials for batching;

[0032] Add the above raw materials: remelted refined aluminum ingots, copper cathodes, zinc ingots, aluminum-silicon master alloys, aluminum-manganese master alloys, aluminum-titanium master alloys, and aluminum-titanium-boron grain refiners into a dry inte...

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Abstract

The invention relates to a method for preparing a high-strength stress-corrosion-resistant aluminum alloy profile, which comprises the following steps: remelting refined aluminum ingots, cathode copper, zinc ingots, magnesium ingots, aluminum-silicon intermediate alloys, aluminum-manganese intermediate alloys, and aluminum-titanium intermediate alloys. Alloy, Al-10% Y master alloy, Al-5% Sc master alloy and Al-10% Sr master alloy are smelted; then homogenization treatment is carried out, after cooling, car sawing is carried out, and then heat treatment and extrusion are sequentially carried out treatment, solution quenching treatment, first stretching treatment, primary aging treatment, second stretching treatment, secondary aging, after cooling, high-strength and stress-corrosion-resistant aluminum alloy profiles can be obtained; the second stretching treatment The rate is slower than that of the first stretching process. The aluminum alloy profile processed by the method of the invention has the effect of improving the strong plasticity and stress corrosion resistance, and the obtained aluminum alloy profile has high surface quality and uniform and fine structure.

Description

technical field [0001] The invention relates to the technical field of metal material processing, in particular to a method for preparing a high-strength stress-corrosion-resistant aluminum alloy profile. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in modern industrial technology, and is widely used in aerospace, transportation, machinery manufacturing, modern architecture and textile industry. Al-Mg-Si series aluminum alloys have the advantages of good processing performance and welding performance, good thermoplasticity, good corrosion resistance, high toughness, not easy to deform after processing, compact and defect-free materials, etc., represented by 6061 and 6082 aluminum alloys Industrial profiles are very versatile. However, under certain working conditions, this series of aluminum alloy profiles has disadvantages such as low strength and modulus, poor stress corrosion resistance, etc., and cannot meet ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C21/08C22F1/047B21C23/14
CPCC22C1/026C22C1/03C22C21/08C22F1/002C22F1/047B21C23/142
Inventor 王健周佳浩徐文婷卢雅琳周东帅杨晓红
Owner JIANGSU UNIV OF TECH
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