Aluminum alloy and heat treatment method thereof

A heat treatment method and aluminum alloy technology are applied in the field of aluminum alloy preparation to achieve the effects of reducing quenching residual stress, increasing room temperature tensile strength, and increasing strength

Active Publication Date: 2018-08-24
益阳仪纬科技有限公司
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  • Description
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  • Application Information

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Problems solved by technology

[0005] In order to solve the technical problem of how to improve the strength of aluminum alloys containing metal fibers, the present invention proposes an aluminum alloy and a heat treatment method thereof

Method used

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  • Aluminum alloy and heat treatment method thereof

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Embodiment 1

[0026] The aluminum alloy in this embodiment is an aluminum alloy product obtained by extrusion casting.

[0027] This embodiment proposes a heat treatment method for an aluminum alloy. In terms of mass percentage, the aluminum alloy includes the following components: 8% carbon steel fiber, 6.2% Mg, 1.0% Zn, 1% Cu, 0.12% Sc, Zr 0.13%, Y 0.16%, Si0.04%, Mn 0.07%, Er 0.02%, Ce 0.02%, impurity≦0.15%, the balance is Al;

[0028] Described heat treatment step comprises:

[0029] S1. Perform high-temperature heat treatment on the aluminum alloy at 500° C. for 3 hours, and quench it with a PAG quenching solution after the high-temperature heat treatment to obtain a high-temperature-treated aluminum alloy; the PAG polymer content in the PAG quenching solution is 15 wt%, so The temperature of the PAG quenching liquid is 75°C, and the stirring rate of the PAG quenching liquid is 130r / s;

[0030] S2. Perform cold-drawing treatment on the aluminum alloy after the high-temperature treatm...

Embodiment 2

[0035] The aluminum alloy in this embodiment is an aluminum alloy product obtained by extrusion casting.

[0036] This embodiment proposes a heat treatment method for an aluminum alloy. In terms of mass percentage, the aluminum alloy includes the following components: 8% carbon steel fiber, 6.2% Mg, 1.0% Zn, 1% Cu, 0.12% Sc, Zr 0.13%, Y 0.16%, Si0.04%, Mn 0.07%, Er 0.02%, Ce 0.02%, impurity≦0.15%, the balance is Al;

[0037] Described heat treatment step comprises:

[0038] S1. Perform high-temperature heat treatment on the aluminum alloy at 600° C. for 3.5 hours, and quench with a PAG quenching solution after the high-temperature heat treatment to obtain a high-temperature-treated aluminum alloy; the content of the PAG polymer in the PAG quenching solution is 25 wt%, The temperature of the PAG quenching liquid is 60°C, and the stirring rate of the PAG quenching liquid is 130r / s;

[0039] S2. Perform cold-drawing treatment on the aluminum alloy after the high-temperature tre...

Embodiment 3

[0044] The aluminum alloy in this embodiment is an aluminum alloy product obtained by extrusion casting.

[0045] This embodiment proposes a heat treatment method for an aluminum alloy. In terms of mass percentage, the aluminum alloy includes the following components: 9% stainless steel fiber, 7.2% Mg, 1.5% Zn, 1.5% Cu, 0.15% Sc, Zr 0.18%, Y 0.18%, Si0.06%, Mn 0.06%, Er 0.01%, Ce 0.01%, impurity≦0.15%, the balance is Al;

[0046] Described heat treatment step comprises:

[0047] S1. Perform high-temperature heat treatment on the aluminum alloy at 550° C. for 4 hours, and quench it with a PAG quenching solution after the high-temperature heat treatment to obtain a high-temperature-treated aluminum alloy; the PAG polymer content in the PAG quenching solution is 45 wt%, so The temperature of the PAG quenching liquid is 70°C, and the stirring rate of the PAG quenching liquid is 130r / s;

[0048] S2. Perform cold-drawing treatment on the aluminum alloy after the high-temperature t...

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Abstract

The invention discloses heat treatment method of an aluminum alloy. The aluminum alloy comprises, by mass, 8%-10% of metal fibers, 5.5%-7.2% of Mg, 1.0%-2.5% of Zn, 0.8%-1.8% of Cu, 0.08%-0.18% of Sc,0.08%-0.18% of Zr, 0.12%-0.22% of Y, 0.02%-0.07% of Si, 0.02%-0.07% of Mn, 0.01%-0.03% of Er, 0.01%-0.03% of Ce, no more than 0.15% of impurities, and the balance Al. The heat treatment method comprises the steps that S1, high-temperature heat treatment is conducted on the aluminum alloy at the temperature of 500-600 DEG C, and after high-temperature heat treatment, quenching is conducted on thealuminum alloy with PAG quenching liquid, so that the aluminum alloy subjected to high-temperature treatment is obtained, wherein the content of PAG polymers in the PAG quenching liquid is 15-60 wt%,the temperature of the PAG quenching liquid is 40-80 DEG C, and the stirring speed of the PAG quenching liquid is 100-200 r/s; S2, cold-deformation treatment is conducted on the aluminum alloy subjected to high-temperature treatment, so that the aluminum alloy subjected to cold deformation is obtained; S3, the aluminum alloy subjected to cold deformation is tempered at the temperature of 300-400 DEG C for 1-2 h; and S4, afterwards, annealing treatment is conducted on the aluminum alloy at the temperature of 100-160 DEG C for 6-8 h, and thus, the strength of the aluminum alloy is improved. Theinvention further provides the aluminum alloy prepared through the heat treatment method.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy preparation, in particular to an aluminum alloy and a heat treatment method thereof. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. How to improve the performance of aluminum alloys, especially the improvement of the strength of aluminum alloys, has become a problem that industry researchers have been paying attention to. [0003] Metal fiber is a new type of industrial material developed in recent years, and it is an important field of modern science. The metal fiber is made by a set of special processes such as multiple bundle drawing, annealing, and solid solution treatment through composite assembly of metal wires, and each strand has thousands or tens of thousands of fibers. Metal fibers have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C49/06C22C49/14C22F1/04C22C111/00
CPCC22C49/06C22C49/14C22F1/002C22F1/04
Inventor 李凯谢昭民
Owner 益阳仪纬科技有限公司
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