Aluminum alloy material

a technology of aluminum alloy materials and alloy materials, which is applied in the field of high-strength aluminum alloy materials, can solve the problems of failure in dimension accuracy or other accuracy, failure in strength anisotropy of aluminum alloy materials, and failure in press forming, etc., and achieve the effect of reducing strength anisotropy and high strength

Pending Publication Date: 2022-04-28
FURUKAWA SKY ALUMINUM CORP
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  • Application Information

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Benefits of technology

The patent text explains how to make an aluminum alloy that is strong and has less strength anisotropy. This means that the material is more uniform in its strength properties, which is useful for making certain components that need to be strong but also need to be symmetrically shaped.

Problems solved by technology

However, Patent Literatures 1 to 3 do not give any consideration to strength anisotropy of the aluminum alloy materials.
In addition, failure in dimension accuracy or other accuracy could occur in a production process such as press forming.
In particular, an aluminum alloy material (H tempered material) having an increased strength through working and curing has a problem of being prone to have remarkable strength anisotropy compared to an aluminum alloy material (0 tempered material) which has been annealed.

Method used

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  • Aluminum alloy material

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examples

[0065]The following description will discuss Example 1 of the present embodiment with reference to Table 1 and Table 2.

[0066](Composition of Aluminum Alloy)

[0067]Table 1 shows the composition of the aluminum alloy used in Example 1.

TABLE 1PresentComposition of Aluminum Alloy [% by Mass]InventionFeSiCuMnMgCrTiVZrCaAlExample 10.220.100.407.60.020.030.01RemainingPercentage

[0068]As shown in Table 1, the composition of the aluminum alloy of Example 1 is within a predetermined range. The predetermined range means that the content of Mg is in a range of 7.0% to 10.0%, and the content of Ca is in a range of not more than 0.1%.

[0069](Production Method)

[0070]After the aluminum alloy having the composition shown in Table 1 is molten and is subjected to the DC casting, the homogenization step, the hot rolling step, and the cold rolling step are carried out. The plate thickness of the aluminum alloy material after completion of the cold rolling step is assumed to be 1.0 mm.

[0071]In Example 1, he...

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Abstract

An aluminum alloy material contains Mg: 7.0% to 10.0% (% by mass, the same applies hereinafter) and Ca: not more than 0.1%, and the aluminum alloy material contains a remainder constituted by aluminum and an inevitable impurity. The aluminum alloy material has a tensile strength of not less than 500 MPa and an elongation of not less than 3% and less than 10%.

Description

TECHNICAL FIELD[0001]The present invention relates to a high-strength aluminum alloy material having reduced strength anisotropy.BACKGROUND ART[0002]Recently, there has been a demand for using an aluminum alloy material to make stronger and lighter various products including, for example, a housing of an electrical device. Using an aluminum alloy material having higher strength makes it possible to reduce the amount of usage of the aluminum alloy material while maintaining the strength of the products at the same degree as before, and thus enables reduction in the weights of the products.[0003]Typical high-strength aluminum alloys include, for example, a 6000 series alloy and a 7000 series alloy. However, the above-described alloys are heat-treatable alloys, which require solution treatment and aging heat treatment, and thus have a problem of low production efficiency. In addition, the 7000 series alloy contains Zn and Cu in a large amount, and thus have a problem of causing corrosi...

Claims

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Application Information

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IPC IPC(8): C22C21/06C22F1/047
CPCC22C21/06C22F1/047
InventorKUROSAKI, TOMOHITOMINODA, TADASHITAMAKI, MITSUHIROKIM, JIN-GYO
OwnerFURUKAWA SKY ALUMINUM CORP