High strength aluminum-magnesium-silicon alloy with excellent forgeability and producing method thereof

A malleable and high-strength technology, applied in the field of high-strength aluminum-magnesium-silicon alloy and its production, can solve the problems of difficulty in meeting the control arm of automobiles, reduce alloy strength, low tensile strength, etc., and avoid coarse intermetallic compounds. The effect of producing, increasing recrystallization temperature, and increasing strength

Active Publication Date: 2008-01-09
JIANGSU ASIA PACIFIC LIGHT ALLOY TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0003] Since the current aluminum-magnesium-silicon alloy has only three additives of silicon, magnesium and manganese, the tensile strength of the product after forging is low, only 270-320Mpa, which is easy to deform and break, and it is difficult to meet the requirements of automobile control arms.
[0004] And because the recrystallization temperature of the aluminum-magnesium-silicon alloy produced according to the above formula is low during solid solution heat treatment, coarse grains are easily produced during solid solution heat treatment, thereby reducing the strength of the alloy
[0005] In addition, due to the high content of manganese element in the above-mentioned aluminum-magnesium-silicon alloy, the strength of the alloy will be further reduced.

Method used

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Embodiment Construction

[0024] First example:

[0025] Select 96.871 parts of aluminum, 1.152 parts of silicon, 1.05 parts of magnesium, 0.172 parts of iron additives, 0.506 parts of manganese additives, 0.132 parts of chromium additives, 0.041 parts of titanium boron refiner and 0.04 parts of aluminum rare earth alloy. Wherein, the parts of each raw material are parts by weight.

[0026] Wherein: the purity of aluminum is greater than or equal to 99.7% by weight; the purity of silicon is greater than or equal to 98.5% by weight; the purity of magnesium is greater than or equal to 99.8% by weight; the manganese additive consists of 75±2% by weight of manganese and 25±2% by weight The flux composition; said iron additive is composed of 80 ± 2% by weight of manganese and 20 ± 2% by weight of flux; said chromium additive is composed of 75 ± 2% by weight of manganese and 25 ± 2% by weight of flux The titanium-boron refining agent is composed of 40 ± 2% by weight of titanium, 5 ± 0.5% by weight of boron ...

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Abstract

An high strength forgeable Al-Mg-Si alloy and its production are both disclosed herewith. It contains Al, Si, Mg, Fe additive,Mn additive, Cr additive, Ti-B fining agent and Al-rare-earth alloy at certain ratio, prepared by: smelting, modifying in furnace, purifying, casting into bars, intimate treating, and water cooling. It has excellent tension resistance to meet demands of automotive control arm.

Description

technical field [0001] The present invention relates to an alloy and its production method. Specifically, it is a high-strength aluminum-magnesium-silicon alloy with excellent forgeability for processing automobile control arms and a production method thereof. Background technique [0002] It is well known in the foundry industry that aluminum-magnesium-silicon alloys are cast with aluminum as the main raw material and added with silicon, magnesium and manganese additives. Wherein, the three additives of silicon, magnesium and manganese are respectively 0.7-1.3 wt%, 0.6-1.2 wt% and 0.4-1.0 wt%. This aluminum-magnesium-silicon alloy is light in weight and has good corrosion resistance and weldability. Therefore, it is widely used in automobile, shipbuilding, construction and other industries, especially by the automobile manufacturing industry as the material of choice for key components such as automobile control arms. In aluminum-magnesium-silicon alloys, silicon and mag...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22C1/02C22C1/06B22D21/04C22F1/043
Inventor 周福海
Owner JIANGSU ASIA PACIFIC LIGHT ALLOY TECH CO LTD
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