Aluminum alloy and preparation method thereof

A technology for aluminum alloy and aluminum alloy ingots, applied in the field of alloy materials, can solve the problem that aluminum alloys are difficult to take into account mechanical properties and elongation, and achieve the effects of avoiding high temperature blistering and deformation problems, simple heat treatment steps, and low equipment requirements.

Active Publication Date: 2021-12-31
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the existing aluminum alloys are difficult to balance the mechanical properties and elongation, the invention provides an aluminum alloy and a preparation method thereof

Method used

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  • Aluminum alloy and preparation method thereof
  • Aluminum alloy and preparation method thereof
  • Aluminum alloy and preparation method thereof

Examples

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preparation example Construction

[0054] Another embodiment of the present invention provides a method for preparing an aluminum alloy as described above, comprising the following steps:

[0055] Weigh Al agent, Si agent, Mn agent, Cu agent, Zn agent, Ga agent, La agent, part of Fe agent and Ca agent in required proportions according to the ratio of elements in the aluminum alloy, and add them to the melting furnace for smelting , to get the melt;

[0056] Refining the melt with a refining agent, removing the Ca agent, introducing an inert gas, and removing the scum;

[0057] Weigh the Mg agent of the required proportion and number, and add it to the smelting furnace;

[0058] Respectively weigh the Sr agent, Cr agent, Mo agent, Ti agent and the remaining Fe agent in required proportions for modification, degassing, and casting to obtain an aluminum alloy ingot;

[0059] Die-casting the aluminum alloy ingot.

[0060] In the present invention, Al agent, Si agent, Mn agent, Cu agent, Zn agent, Ga agent, La ag...

Embodiment 1

[0092] This example is used to illustrate the aluminum alloy disclosed in the present invention and its preparation method, including the following steps:

[0093] As shown in Table 1, the composition of the aluminum alloy is calculated by mass content: the content of Si is 11%, the content of Cu is 1.8%, the content of Zn is 0.5%, the content of Mn is 0.3%, and the content of Mg is 0.35%. The content of Cr is 0.01%, the content of Sr is 0.02%, the content of Ti is 0.06%, the content of Fe is 0.25%, the content of Ga is 0.014%, the content of Mo is 0.004%, and the content of La is 0.004%, according to The mass content of the above-mentioned aluminum alloy composition requires the mass of various intermediate alloys or metal elements, the balance is Al and other elements, and the total amount of other elements is less than 0.1%, and it is added and operated according to the following steps:

[0094] Step 1. When the furnace temperature is 200°C-300°C, add pure aluminum;

[009...

Embodiment 2-28

[0104] Examples 2-28 are used to illustrate the aluminum alloy disclosed in the present invention and its preparation method, including most of the operation steps in Example 1, the differences are:

[0105] The aluminum alloy compositions shown in Examples 2-28 in Table 1 were used, and other operating steps were the same as in Example 1.

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Abstract

In order to solve the problem that aluminum alloys in the prior art are difficult to consider mechanical properties and elongation at the same time, the invention provides the aluminum alloy. The aluminum alloy comprises the following components in percentage by weight of: 8%-13% of Si, 1.6%-2% of Cu, 0.002%-0.8% of Zn, 0.2%-0.5% of Mn, 0.2%-0.5% of Mg, 0.001%-0.02% of Cr, 0.01%-0.03% of Sr, 0.03%-0.08% of Ti, 0.1%-0.4% of Fe, 0.01%-0.02% of Ga, 0.002%-0.01% of Mo, 0.001%-0.02% of La and the balance of Al and other elements, and the total amount of the other elements is less than 0.1%. Meanwhile, the invention further discloses a preparation method of the aluminum alloy. The yield strength and the tensile strength of the aluminum alloy provided by the invention are remarkably improved, and the aluminum alloy also has better elongation on the premise of ensuring the strength.

Description

technical field [0001] The invention belongs to the technical field of alloy materials, and in particular relates to an aluminum alloy and a preparation method thereof. Background technique [0002] Die-casting aluminum alloys have high specific strength, good corrosion resistance, electrical and thermal conductivity, and casting processing, and are widely used in the fields of automobiles, communication electronics, and aerospace. [0003] Due to the presence of eutectics in aluminum alloys, eutectics can ensure good die-casting performance. With the increase of eutectics, aluminum alloys become brittle, thereby reducing mechanical properties, and existing aluminum alloy materials also have high elongation. requirements, which makes it difficult for existing aluminum alloys to balance the requirements for mechanical properties and elongation. Contents of the invention [0004] Aiming at the problem that the existing aluminum alloys are difficult to balance mechanical pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/04C22C1/02C22C1/06
CPCC22C21/04C22C1/026C22C1/06
Inventor 郭强王梦得安维付景松
Owner BYD CO LTD
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