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A kind of superplastic aluminum alloy plate and preparation method thereof

An aluminum alloy sheet and superplastic technology, applied in the field of aluminum alloy melting, can solve the problems of high cost, high requirements, long production cycle, etc., and achieve the effect of dimensional stability and satisfying forming deformation.

Active Publication Date: 2017-08-25
贵州航天风华精密设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the deformed aluminum alloy has ideal high plasticity, its processing process requires high equipment and tooling molds, and there are many processes, so the production cycle is long and the cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The invention provides a superplastic aluminum alloy plate, which is prepared from the following raw materials in percentage by weight: 5% of Mn, 2% of Mg, 2% of Zn, 0.5% of Cu, 0.01% of Fe, 0.01% Si, 0.001% Li, 0.001% Sb, 0.001% Ce, 0.001% Gd, 0.001% Y, and the rest is Al.

[0021] Its preparation method is as follows:

[0022] 1) Preheat the melting furnace for 15 minutes, put pure aluminum ingots into the furnace, heat to 700°C, and keep the temperature of the melted aluminum liquid at a constant temperature for 20 minutes; fully melt the pure aluminum ingots, then add silicon and manganese to the aluminum liquid to melt in turn, and then Lower the temperature to 660°C and completely press the magnesium into the alloy liquid;

[0023] 2) Add the remaining alloy components into the alloy solution, keep it warm for 20 minutes, then raise the temperature to 750°C, add the refining agent into the alloy solution, and keep it warm for 30 minutes;

[0024] 3) Cool down th...

Embodiment 2

[0030] The invention provides a superplastic aluminum alloy plate, which is prepared from the following raw materials in percentage by weight: 10% of Mn, 4% of Mg, 4% of Zn, 1% of Cu, 0.1% of Fe, 0.1% Si, 0.01% Li, 0.01% Sb, 0.01% Ce, 0.01% Gd, 0.01% Y, and the rest is Al.

[0031] Its preparation method is as follows:

[0032] 1) Preheat the melting furnace for 125 minutes, put pure aluminum ingots into the furnace, heat to 730 ° C, and keep the temperature of the melted aluminum liquid at a constant temperature for 30 minutes; fully melt the pure aluminum ingots, then add silicon and manganese to the aluminum liquid to melt in turn, and then Lower the temperature to 700°C and completely press the magnesium into the alloy liquid;

[0033] 2) Add the remaining alloy components into the alloy solution, keep it warm for 30 minutes, then raise the temperature to 800°C, add the refining agent into the alloy solution, and keep it warm for 40 minutes;

[0034] 3) Cool down the mel...

Embodiment 3

[0040] The invention provides a superplastic aluminum alloy plate, which is prepared from the following raw materials in percentage by weight: 6% of Mn, 3% of Mg, 3% of Zn, 0.8% of Cu, 0.05% of Fe, 0.05% Si, 0.004% Li, 0.007% Sb, 0.002% Ce, 0.006% Gd, 0.009% Y, and the rest is Al.

[0041] Its preparation method is as follows:

[0042] 1) Preheat the melting furnace for 20 minutes, put pure aluminum ingots into the furnace, heat to 720 ° C, and keep the temperature of the melted aluminum liquid at a constant temperature for 25 minutes; fully melt the pure aluminum ingots, then add silicon and manganese to the aluminum liquid to melt in turn, and then Lower the temperature to 6700°C and completely press the magnesium into the alloy liquid;

[0043] 2) Add the remaining alloy components into the alloy solution, keep it warm for 25 minutes, then raise the temperature to 770°C, add the refining agent into the alloy solution, and keep it warm for 35 minutes;

[0044] 3) Cooling t...

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Abstract

The invention provides a superplasticity aluminum alloy plate and belongs to the technical field of aluminum alloy melting.The plate is prepared by the raw materials by weight of 5%-10% of Mn, 2%-4% of Zn, 0.5%-1% of Cu, 0.01%-0.1% of Fe, 0.01%-0.1% of Si, 0.001%-0.01% of Li, 0.001%-0.01% of Sb, 0.001%-0.01% of Ce, 0.001%-0.01% of of Gd, 0.001%-0.01% of Y and the balance of Al.The obtained aluminum alloy plate has high-temperature superplasticity, the horizontal elongation of the plate can reach 235%-245%, the longitudinal elongation of the plate can reach 252%-264%, workpieces of complex shapes can be further formed, no resilience exists during forming, the size is stable, the processing deviation is smaller than 2.2%o, and the tolerance is similar to precision machining.Besides, the preparation method meets green and environmental-protection processing and can meet the requirements of large forming deformation and complex shapes, and similar imported products can be fully replaced.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy smelting, and relates to a superplastic aluminum alloy plate and a preparation method thereof. Background technique [0002] Energy, environmental protection, and safety are the problems faced by the automotive industry in the world today. Automobile lightweight is an effective way to reduce energy consumption, improve automobile fuel economy, and reduce environmental pollution. As a traditional metal material, aluminum alloy has low density, high specific strength, corrosion resistance, low density, good impact resistance, easy surface coloring, good processing formability, and high recycling and regeneration. Excellent properties make it an ideal material for automobile lightweight. [0003] With the development of modern industry and new casting technologies, the demand for aluminum alloys, such as aluminum alloys with high strength, high plasticity, excellent wear resistance and corros...

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 李翔光王德细俞开升陈春喜于丹敖四海王昌明程国栋李伟梁益龙
Owner 贵州航天风华精密设备有限公司
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