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Aluminum alloy material and production method therefor, and aluminum alloy cladding material using aluminum alloy material

An aluminum alloy material and aluminum alloy technology, applied in the field of aluminum alloy materials, can solve problems such as inappropriate anti-corrosion methods, accelerated corrosion speed, and difficulties in high corrosion resistance of thin-walled materials, and achieve easy and cheap formation and environmental burden Small, good corrosion resistance effect

Inactive Publication Date: 2018-12-21
FURUKAWA SKY ALUMINUM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Corrosion resistance is improved by making multiple intermetallic compounds with a higher potential than the matrix of the sacrificial anode material exist as local cathode points, but because the intermetallic compound with a higher potential than the matrix of the sacrificial anode material accelerates Corrosion rate, so it is an inappropriate corrosion protection method for thinning the wall
In any case, from the viewpoint of sacrificial corrosion protection, it is difficult to make thin-walled materials have high corrosion resistance

Method used

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  • Aluminum alloy material and production method therefor, and aluminum alloy cladding material using aluminum alloy material
  • Aluminum alloy material and production method therefor, and aluminum alloy cladding material using aluminum alloy material
  • Aluminum alloy material and production method therefor, and aluminum alloy cladding material using aluminum alloy material

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Embodiment

[0086] Next, the present invention will be described in further detail based on examples. These examples are merely illustrations for explaining the present invention, and do not limit the technical scope of the present invention.

[0087] As the aluminum alloy material, alloys having the compositions shown in Table 1 and Table 2 were used. These alloys were cast by a semi-continuous casting method at a cooling rate of 3° C. / sec in order to prevent the formation of coarse Mg—Si-based crystals. After casting, surface cutting was performed, and a homogenization treatment was performed at a temperature of 500° C. for 3 hours in order to homogenize the metal structure and re-dissolve the coarse Mg—Si-based crystals. The casting method and homogenization process described above can also be applied to sheet and extruded materials.

[0088] Table 1

[0089]

[0090] Table 2

[0091]

[0092] An uncoated veneer (hereinafter, simply referred to as a veneer) is produced as fol...

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Abstract

Provided are: an aluminum alloy material which is an Al-Mg-Si aluminum alloy material that comprises an aluminum alloy containing 0.10-1.50 mass% (hereinafter, %) of Si and 0.10-2.00% of Mg, and thathas an oxide coating membrane containing aluminum as a major component formed on the surface, wherein Mg-Si crystallized matter having a circle-equivalent diameter of 0.1-5.0 [mu]m is contained at 100-150,000 particles / mm2, Mg-Si crystallized matter having a circle-equivalent diameter of more than 5.0 [mu]m but not more than 10.0 [mu]m is contained at 5 particles / mm2 or less, and the oxide coatingmembrane contains Si at a maximum concentration of 0.1-40.0% and Mg at a maximum concentration of 0.1-20.0%; a production method therefor; and an aluminum alloy cladding material in which at least one surface of an aluminum core material is cladded with the aluminum alloy material.

Description

technical field [0001] The present invention relates to an aluminum alloy material excellent in corrosion resistance. Specifically, it relates to an aluminum alloy material having high corrosion resistance achieved by forming a protective film on the surface without sacrificing the anti-corrosion effect, a method for producing the same, and the use of the aluminum alloy material. Aluminum alloy cladding material of aluminum alloy material. Background technique [0002] Because aluminum and aluminum alloy materials (hereinafter, they are collectively referred to as "aluminum alloy materials") are light in weight, and have excellent corrosion resistance, processability, decoration, strength, electrical conductivity, and thermal conductivity, etc., so Used in various fields. Based on the consideration of light weight, in the field of transportation such as automobiles, railway vehicles, aircraft, ships, containers, etc., based on the consideration of processability, in the ext...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/68C22C21/00C23C22/56C23C22/66C22F1/00C22F1/04
CPCB32B15/016C22C21/02C22C21/08C22F1/05C22C21/00C22F1/00C22F1/04C23C22/56C23C22/66C23C22/68Y10T428/12764
Inventor 岛田隆登志寺山和子大谷良行
Owner FURUKAWA SKY ALUMINUM CORP
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