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High-formability and high-strength aluminum alloy material as well as preparation method and application of the high-formability and high-strength aluminum alloy material

A technology of aluminum alloy materials and formability, which is applied in the field of non-ferrous metal materials, can solve problems such as high formability, high-strength aluminum alloy materials, cooling speed limitations, and insufficient mechanical properties, so as to shorten aging time and improve round bending , Eliminate the effect of component segregation

Active Publication Date: 2011-08-31
ZHEJIANG LEXIANG ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary 6063-T5 alloy is extruded by air cooling and quenching, and the cooling rate is limited. In addition, the high temperature age hardening process is used to form a precipitation-free zone (PFZ) on both sides of the grain boundary, resulting in insufficient mechanical properties of the material and tertiary processing performance ( Bending, stamping, toughness) deterioration, unable to meet the requirements of high formability, high strength aluminum alloy materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The high formability and high strength aluminum alloy material of this embodiment is prepared by the following method:

[0032] 1) Casting

[0033] First, 32 kg of aluminum-silicon alloy, 3.5 kg of aluminum-strontium alloy, 0.95 kg of manganese additive and 965 kg of aluminum ingot are heated together to 760°C and melted. Wherein, the weight percentage content of silicon in the aluminum-silicon alloy is 12%; the weight percentage content of strontium in the aluminum-strontium alloy is 10%; and the weight percentage content of manganese in the manganese additive is 70%. Then add 5.2 kilograms of bulk pure magnesium ingots. Then the melt is refined by inert gas-flux mixed refining method. Among them, the inert gas uses high-purity nitrogen with a purity of not less than 99.997%, and the flux uses 40% KCl, 35% NaCl, and 25% NaCl by weight. 3 AlF 6 The powdery flux is composed, the flux dosage is 1.5kg / t melt weight ratio, the refining temperature is controlled at 740°C...

Embodiment 2

[0044] The high formability and high strength aluminum alloy material of this embodiment is prepared by the following method:

[0045] 1) Casting

[0046] First, 34 kg of aluminum-silicon alloy, 4 kg of aluminum-strontium alloy, 1.4 kg of manganese additive and 975 kg of aluminum ingot are heated together to 760°C and melted. Among them, the weight percent content of silicon in the aluminum-silicon alloy is 11%, the weight percent content of strontium in the aluminum-strontium alloy is 9%, and the weight percent content of manganese in the manganese additive is 71%. Then add 4.8 kilograms of bulk pure magnesium ingots. Then the melt is refined by inert gas-flux mixed refining method. Among them, the inert gas uses high-purity nitrogen with a purity of not less than 99.997%, and the flux uses 50% KCl, 32% NaCl, and 18% NaCl by weight. 3 AlF 6 Composed of powdery flux, the amount of flux is 2kg / t melt weight ratio, the refining temperature is controlled at 720°C, and the ref...

Embodiment 3

[0057] The high formability and high strength aluminum alloy material of this embodiment is prepared by the following method:

[0058] 1) Casting

[0059] First, 35 kg of aluminum-silicon alloy, 4.5 kg of aluminum-strontium alloy, 1.1 kg of manganese additive and 955 kg of aluminum ingot are heated together to 750°C and melted. Among them, the weight percent content of silicon in the aluminum-silicon alloy is 13%; the weight percent content of strontium in the aluminum-strontium alloy is 11%; the weight percent content of manganese in the manganese additive is 69%. Then add 5.05 kilograms of bulk pure magnesium ingots. Then the melt is refined by inert gas-flux mixed refining method. Among them, the inert gas adopts high-purity nitrogen with a purity of not less than 99.997%, and the flux adopts 49% KCl, 25% NaCl, 26% Na 3 AlF 6 Composed of powdery flux, the amount of flux is 1.8kg / t melt weight ratio, the refining temperature is controlled at 740°C, and the refining time ...

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Abstract

The invention relates to an aluminum alloy material, in particular to a high-formability and high-strength aluminum alloy material as well as a preparation method and application of the high-formability and high-strength aluminum alloy material, belonging to the field of non-ferrous metal materials. The high-formability and high-strength aluminum alloy material contains the following components in mass percent: 0.40-0.50% of Mg, 0.35-0.70% of Si, 0.01-0.06% of Sr, 0.06-0.10% of Mn, and the balance of Al and unavoidable impurities. Compared with the mechanical properties of 6063-T5, the tensile strength of the aluminum alloy material is improved to 220Mpa from 160Mpa, the yield strength is improved to 180Mpa from 110Mpa, and the elongation is improved to above 12% from 8%.

Description

technical field [0001] The invention relates to an aluminum alloy material, in particular to a high-formability, high-strength aluminum alloy material and its preparation method and application, belonging to the field of non-ferrous metal materials. Background technique [0002] At present, 6063-T5 aluminum alloy materials are used for rail vehicle interior parts, leisure products, and portable aluminum alloy ladder materials that require high formability and high strength. The main components: Mg0.45-0.9%, Si0.2-0.6% , its tensile strength ≥ 160Mp, yield strength ≥ 110MPa, elongation ≥ 8%. Ordinary 6063-T5 alloy is extruded by air cooling and quenching, and the cooling rate is limited. In addition, the high temperature age hardening process is used to form a precipitation-free zone (PFZ) on both sides of the grain boundary, resulting in insufficient mechanical properties of the material and tertiary processing performance ( Bending, stamping, toughness) deteriorate, unable...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22F1/047C22F1/05
Inventor 金祥龙陈伟
Owner ZHEJIANG LEXIANG ALUMINUM
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