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Aluminum alloy sheet

An aluminum alloy plate and quality technology, applied in furnaces, heat treatment equipment, manufacturing tools, etc., can solve the problems of increased usage and material cost, and achieve the effect of improving strength and reducing material cost

Pending Publication Date: 2021-04-09
FURUKAWA SKY ALUMINUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the usage of metal ingots increases, the cost of materials may increase

Method used

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Embodiment Construction

[0020] (Aluminum alloy plate)

[0021] The aluminum alloy plate contains Si, Mn, Mg, and Fe, Mg, and Fe as essential components. In addition, the aluminum alloy plate contains one or two or more elements of Cu, Cr, Zn, and Ti in addition to these essential components. The aluminum alloy plate may further contain Ni (nickel) as an optional component. Hereinafter, the chemical components of the aluminum alloy plate and the reason for limitation thereof will be described in detail.

[0022] ・Si: 2.3% by mass to 3.8% by mass

[0023] The aluminum alloy plate contains 2.3% by mass or more and 3.8% by mass or less of Si as an essential component. Part of Si exists in the aluminum alloy plate as solid solution Si dissolved in the Al matrix. In addition, Si that is not solid-dissolved in the Al matrix is ​​represented by simple Si, Mg 2 Si, Al-(Fe,Mn)-Si-based intermetallic compounds, Al-Mn-Si-based intermetallic compounds, Al-Fe-Si-based intermetallic compounds, and the like exi...

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Abstract

The invention provides an aluminum alloy sheet which can easily reduce material cost and can improve strength through press forming. The aluminum alloy sheet has a chemical composition containing Si: 2.3-3.8 mass %, Mn: 0.35-1.05 mass %, Mg: 0.35-0.65 mass %, Fe: 0.01-0.45 mass %, at least one element selected from the group consisting of Cu: 0.0010-1.0 mass %, Cr: 0.0010-0.10 mass %, Zn: 0.0010-0.50 mass %, and Ti: 0.0050-0.20 mass %, and the balance being Al and inevitable impurities. The ratio of the Si content to the Mn content is 2.5 or more and 9.0 or less. The aluminum-alloy sheet exhibits an elongation of 23% or more and a strain hardening exponent of 0.28 or more at a nominal strain of 3%.

Description

technical field [0001] The present invention relates to an aluminum alloy plate. Background technique [0002] Al-Mg (aluminum-magnesium) alloys, Al-Mg-Si (aluminum-magnesium-silicon) alloys, Al-Mg-Si-Cu (aluminum-magnesium-silicon-copper) alloys and other aluminum alloys containing Mg despite their specific gravity It is about 1 / 3 of the cold-rolled steel plate, but has the same strength as the cold-rolled steel plate. In addition, Al-Mg-Si alloys and Al-Mg-Si-Cu alloys have bake hardenability, that is, they have a characteristic that the strength increases compared with that before heating by heating during coating and sintering. By making effective use of these characteristics, the replacement of cold-rolled steel sheets with Mg-containing aluminum alloy sheets is progressing in fields such as automobile body sheets and body panels where weight reduction is strongly desired. [0003] Conventionally, when producing such an aluminum alloy plate, an aluminum ingot having a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C1/02C22B7/00C22F1/043
CPCC22C21/02C22C1/026C22B7/003C22F1/002C22F1/043C21D8/0236C21D9/46C22C21/04C21D8/0226
Inventor 蔵本辽永井健史增田勇也大野一贵
Owner FURUKAWA SKY ALUMINUM CORP
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