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High-performance wrought aluminum alloy and manufacturing method

A technology for deforming aluminum alloy and manufacturing method, applied in the field of aluminum alloy, can solve problems such as reducing cost, and achieve the effects of reducing production cost, eliminating anisotropy of mechanical properties, and excellent super strength

Inactive Publication Date: 2022-05-27
SHANDONG NANSHAN ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are few reports on the cost reduction of ultra-high strength Al-Zn-Mg alloys with moderate Sc and Zr

Method used

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  • High-performance wrought aluminum alloy and manufacturing method
  • High-performance wrought aluminum alloy and manufacturing method
  • High-performance wrought aluminum alloy and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Put pure aluminum, pure zinc and pure magnesium into a vacuum induction melting furnace, melt at 755 °C under the protection of high-purity argon and keep for 30 minutes, and then add Al-20Ag master alloy, Al-25Sc master alloy and Al-25Zr intermediate The alloy was kept for 2h, and finally cooled to 690°C, left standing for 15min, and poured. In this way, the composition is 6.0wt.%Zn, 3.0wt.%Mg, 1.6wt.%Ag, 0.45wt.%Sc, 0.7wt.%Zr, the total amount of impurity elements is less than 0.02wt.% and the balance is Al, The aluminum alloy round ingot with the size of Φ110mm×85mm (the size after removing the riser) is then homogenized at 575℃×24h in an argon protective atmosphere to uniform the structure and eliminate the segregation and solid solution intergranular phase.

[0054] The oxide scale on the surface of the round ingot was removed by turning, and cut into extruded specimens of Φ100mm×80mm. After preheating at 250°C for 0.5h, it was extruded into an aluminum alloy bar o...

Embodiment 2

[0057] Put pure aluminum, pure zinc and pure magnesium into a vacuum induction melting furnace, melt at 720℃ under the protection of high-purity argon and keep for 25min, then add Al-20Ag master alloy, Al-25Sc master alloy and Al-25Zr intermediate The alloy was kept for 0.5h, and finally cooled to 660°C, left standing for 10min, and poured. In this way, the composition is 7.5wt.%Zn, 3.5wt.%Mg, 2.5wt.%Ag, 0.6wt.%Sc, 0.8wt.%Zr, the total amount of impurity elements is less than 0.02wt.% and the balance is Al, The aluminum alloy round ingot with the size of Φ110mm×85mm (the size after removing the riser); then homogenized at 410℃×24h in an argon protective atmosphere to uniform the structure and eliminate the segregation and solid solution intergranular phase.

[0058] The oxide skin on the surface of the round ingot was removed by turning, and cut into extruded specimens of Φ100mm×80mm. After preheating at 300 °C for 0.5h, it was extruded into an aluminum alloy bar of Φ30mm at o...

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Abstract

The invention discloses a high-performance wrought aluminum alloy and a manufacturing method, and mainly relates to the field of aluminum alloys. An aluminum alloy ingot is used, the aluminum alloy ingot comprises 5.0-7.5 wt.% of Zn, 2.0-3.5 wt.% of Mg, 1.0-2.5 wt.% of Ag, 0.3-0.6 wt.% of Sc, 0.6-0.8 wt.% of Zr, the total amount of impurity elements is smaller than 0.02 wt.%, and the balance Al, and the aluminum alloy ingot is prepared through the extrusion technology. The aluminum alloy has the beneficial effects that the aluminum alloy has excellent mechanical properties such as super strength and ductility.

Description

technical field [0001] The invention relates to the field of aluminum alloys, in particular to an ultra-high-strength deformed rare-earth aluminum alloy and a manufacturing method. Background technique [0002] Energy saving and emission reduction is an important theme of current world development. Lightweight is an important way to achieve energy saving and emission reduction of automobiles, and it is also the technological development direction of automotive innovation projects in the world today. 60% of all energy consumption of a car comes from its own weight. For every 10% reduction in weight, the energy consumption can be reduced by 10% to 15%, the fuel efficiency of fuel vehicles can be increased by 6% to 8%, and the electricity of electric vehicles can be saved by 4% to 5%. Compared with traditional steel materials, aluminum alloys have the advantages of low density (about 1 / 3 of steel), light weight, excellent formability, good corrosion resistance, easy recycling, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22C1/03C22F1/053C22F1/02
CPCC22C21/10C22C1/026C22C1/03C22F1/053C22F1/02
Inventor 王绍俊隋来智沈现猛丁岩马德良杨焕军臧伟王仁武丁春华吕尚娟孟杰马旭
Owner SHANDONG NANSHAN ALUMINUM
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