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Aluminum-magnesium-silicon alloy and preparation method and application thereof

An aluminum-magnesium-silicon and aluminum alloy technology, which is applied in the field of aluminum-magnesium-silicon alloys and their preparation, can solve problems such as strength reduction, strength and electrical conductivity that cannot meet the use requirements at the same time, and achieve the effect of improving tensile strength and yield strength

Pending Publication Date: 2022-02-25
HUNAN RARE EARTH METAL MATERIAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the traditional aluminum-magnesium-silicon alloy is solution quenched or thermally processed, it is placed at room temperature for a period of time before aging treatment, and its strength is reduced, so that the strength and electrical conductivity cannot meet the requirements of use at the same time.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] (1) ingredients

[0118] Prepare raw aluminum ingots, magnesium ingots and aluminum intermediate alloys (Al-20% Si, Al-1% Zr, Al-5% Mn, Al-5% Zr, Al-5% Mn, Al-5% Zr, Al-5% Mn, Al-5% Zr, Al-5% Mn, Al-5% Zr, Al-5% Mn, Al-5% Zr, Al-5% Mn, Al-5% Zr, AL Ti, Al-10% La, Al-10% SR):

[0119] Mg: 0.60 wt%, Si: 0.090 wt%, Cu: 0.15 wt%, Zr: 0.043 wt%, Mn: 0.0080 wt%, Ti: 0.021 wt%, LA: 0.030 wt%, SR: 0.030 wt%, margins are Al and inevitable impurities; wherein Al-20% Si in aluminum intermediate alloy represents 20% of the total mass of Al-Si alloy, Al-5% ZR represents ZR accounted for Al-Zr The total mass of the alloy is 5%; the quality of Fe, Cu, Zr, Mn and Ti is 0.312%.

[0120] (2) Fusion, refining and casting

[0121] The aluminum ingot, magnesium ingot and aluminum alloy were added at 700 ° C. After the raw material is completely melted, the motor is stirred, the stirring speed is 150 r / min; the temperature is raised to 750 ° C for refining, refining agent is hexagone, refined ...

Embodiment 2

[0130] As in Example 1, different points are different from the ingredients and step (6) in step (1), and step (1) and step (6) are specifically as follows:

[0131] (1) ingredients

[0132] Prepare raw aluminum ingots, magnesium ingots and aluminum intermediate alloys (Al-20% Si, Al-1% Zr, Al-5% Mn, Al-5% Zr, Al-5% Mn, Al-5% Zr, Al-5% Mn, Al-5% Zr, Al-5% Mn, Al-5% Zr, Al-5% Mn, Al-5% Zr, Al-5% Mn, Al-5% Zr, AL Ti, Al-10% La, Al-10% SR):

[0133] Mg: 0.63 wt%, Si: 0.66 wt%, Fe: 0.093 wt%, Cu: 0.047 wt%, Zr: 0.0050 wt%, Ti: 0.023 wt%, LA: 0.030 wt%, SR: 0.030 wt%, the margin is Al and inevitable impurities; Fe, Cu, Zr, Mn and Ti are of 0.288%.

[0134] (2) ~ (5) in Example 1.

[0135] (6) The alloy bar obtained in step 5 is first performed at room temperature for 5 days, and then the worker aging is treated at 200 ° C for 12 hours, water is cold, and the aluminum magnesium silicon alloy is obtained.

Embodiment 3

[0137] As in Example 1, different points are different from the ingredients in step (1), and step (1) is specifically as follows:

[0138] (1) ingredients

[0139] Prepare raw aluminum ingots, magnesium ingots and aluminum intermediate alloys (Al-20% Si, Al-1% Zr, Al-5% Mn, Al-5% Zr, Al-5% Mn, Al-5% Zr, Al-5% Mn, Al-5% Zr, Al-5% Mn, Al-5% Zr, Al-5% Mn, Al-5% Zr, Al-5% Mn, Al-5% Zr, AL Ti, Al-10% Y, Al-15% GD, Al-10% La, Al-10% SR):

[0140] Mg: 0.72 wt%, Si: 0.62 wt%, Fe: 0.10 wt%, Cu: 0.053 wt%, Zr: 0.0050 wt%, Ti: 0.030 wt%, Y: 0.030 wt%, GD: 0.060 wt%, LA: 0.050 wt%, SR: 0.050 wt%, the margin is Al and inevitable impurities; the quality of Fe, Cu, Zr, Mn, and Ti is 0.318%, Y, GD and LA quality The sum is 0.14 wt%.

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Abstract

The invention relates to an aluminum-magnesium-silicon alloy and a preparation method and application thereof. The aluminum-magnesium-silicon alloy comprises the following components in percentage by mass: 0.40 wt% to 0.75 wt% of Mg, 0.40 wt% to 0.80 wt% of Si, 0.05 wt% to 0.25 wt% of Fe, 0.05 wt% to 0.25 wt% of Cu, 0.03 wt% to 0.20 wt% of Zr, 0.005 wt% to 0.05 wt% of Mn, 0.01 wt% to 0.05 wt% of Ti, 0 to 0.20 wt% of Y, 0 to 0.20 wt% of Gd, 0.01 wt% to 0.10 wt% of La, 0.008 wt% to 0.05 wt% of Sr and the balance of Al. According to the aluminum-magnesium-silicon alloy, segregation of Mg atoms and Si atoms into atomic clusters under the room temperature condition is effectively relieved, the negative influence of natural aging is reduced, the tensile strength and yield strength of the aluminum-magnesium-silicon alloy are effectively improved, and meanwhile the electric conductivity of the aluminum-magnesium-silicon alloy is basically not influenced.

Description

Technical field [0001] The present invention relates to the field of aluminum material, and Background technique [0002] Aluminum alloys have the characteristics of low price, light weight, high strength, good processing performance, excellent electrical conductivity and corrosion resistance, and are widely used in wire and cable, intersection profiles, electrodes and other fields. [0003] Aluminum magnesium silicon (Al-Mg-Si) alloys are common aluminum alloy materials with excellent electrical conductivity. However, conventional aluminum-magnesium silicon alloys are placed after a solid-soluble quenching or thermal processing, and the intensity is reduced, which is reduced, so that strength and conductivity cannot meet simultaneous use requirements. Therefore, there is a need to develop aluminum magnesium silicon alloy materials having high tensile strength and yield strength, and excellent in conductive properties. Inventive content [0004] Based on this, the present invent...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22C21/08C22C1/02C22F1/05
CPCC22C21/02C22C21/08C22C1/026C22F1/05
Inventor 罗天纵姚茂海吕晶王志坚熊爱虎童璨瑜李杰
Owner HUNAN RARE EARTH METAL MATERIAL RES INST
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