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High-strength wrought aluminum alloy containing rare earth samarium and preparation method thereof

A technology for deforming aluminum alloys and aluminum alloys, which is applied in the field of metal materials and can solve problems such as poor mechanical properties of aluminum alloys

Inactive Publication Date: 2020-04-17
SHANDONG NANSHAN ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a high-strength deformed aluminum alloy containing rare earth samarium and a preparation method thereof in order to solve the problem of poor mechanical properties of existing aluminum alloys

Method used

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  • High-strength wrought aluminum alloy containing rare earth samarium and preparation method thereof
  • High-strength wrought aluminum alloy containing rare earth samarium and preparation method thereof

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preparation example Construction

[0023] The present invention also provides a method for preparing a high-strength wrought aluminum alloy containing rare earth samarium. The aluminum alloy uses pure Al, Mg, Si and Al-30Cu, Al-25Sm intermediate alloys as raw materials for melting and casting, homogenization treatment, hot extrusion and Prepared by aging treatment, including the following steps:

[0024] (1) Aluminum alloy ingot preparation The raw material batching of pure Al, Mg, Si and Al-30Cu, Al-25Sm master alloy is cast into aluminum alloy ingot;

[0025] (2) Extrusion billet preparation: homogenize the aluminum alloy ingot at 520-560°C for 6-14 hours, and process it into an extrusion billet;

[0026] (3) Preparation of extrusion profiles: Preheat the above-mentioned extrusion billet and extrusion die in a resistance furnace at 470-500°C for 1-2h, and preheat the extruder at 400-500°C for 1-2h, and the extrusion ratio is 8 :1-20:1, the extrusion speed is 10-15m / min, and the extrusion profile is prepared ...

Embodiment 1

[0035] The high-strength deformed aluminum alloy of this embodiment is composed of the following components by mass percentage: Mg: 1.5wt.%, Si: 0.5wt.%, Cu: 0.2wt.%, Sm: 0.1wt.%, and the balance is Al and not Avoid impurities.

[0036] The preparation of the high-strength deformed aluminum alloy in this embodiment includes the following steps:

[0037] (1) Preparation of aluminum alloy ingots: raw materials of pure Al, Mg, Si and Al-30Cu, Al-25Sm intermediate alloys are dried according to the above mass percentage ingredients; the drying temperature is preferably 300 ° C, and the drying time is preferably 1h; put the dried pure Al ingot into a preheated 400-500°C crucible and heat up with the furnace until it is completely melted, and the temperature is controlled at 710°C to obtain molten aluminum; put the dried Mg, Si and Al- 30Cu, Al-25Sm master alloy is added to the molten aluminum, the temperature is controlled at 730°C, and the melt is stirred for 3 minutes after compl...

Embodiment 2

[0044] The difference between this embodiment 2 and embodiment 1 is that the mass percentage of the alloy components is Mg: 2.0wt.%, Si: 1.0wt.%, Cu: 0.5wt.%, Sm: 0.2wt.%, The balance is Al and unavoidable impurities.

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Abstract

The invention provides a high-strength wrought aluminum alloy containing rare earth samarium and a preparation method of the high-strength wrought aluminum alloy, and belongs to the technical field ofmetal materials. The problem that an existing aluminum alloy is poor in mechanical property is solved. The aluminum alloy is prepared from the following chemical components of, in percentage by mass,1.5wt.% - 2.5wt.% of Mg, 0.5wt.% - 1.5wt.% of Si, 0.2wt.% - 1.2wt.% of Cu, 0.1wt.% - 0.5wt.% of Sm and the balance Al. The high-strength wrought aluminum alloy containing the rare earth samarium hasexcellent mechanical properties, and by taking Al-2Mg-Si-0.9Cu-0.5Sm as an example, the room-temperature yield strength and the tensile strength of the Al-2Mg-Si-0.9Cu-0.5Sm is 315MPa and 423MPa respectively.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and relates to a high-strength deformed aluminum alloy containing rare earth samarium and a preparation method thereof. Background technique [0002] Metal aluminum and aluminum alloys are currently light metal materials in industrial applications. Due to their excellent castability, specific stiffness, specific strength, good machinability, high damping coefficient and excellent electromagnetic shielding performance, they make It has great application potential in the fields of automobiles, aviation, electronics, etc., and has become one of the new green materials in the 21st century that manufacturers in industries such as automobiles and aircrafts around the world are competing to research and develop. However, the strength of traditional aluminum alloys is not high, which severely limits the application of aluminum alloys. Therefore, the development of high-strength aluminum alloys is...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22C1/03C22F1/047
CPCC22C1/026C22C1/03C22C21/08C22F1/047
Inventor 隋来智程仁寨隋信磊马旭肖栋郑卓阳程雪婷张华
Owner SHANDONG NANSHAN ALUMINUM
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