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Aluminum alloy sheet

An aluminum alloy plate, quality technology, applied in the direction of metal rolling, etc., can solve the problems of reduced productivity and increased probability of edge cracks, and achieve the effect of suppressing edge cracks

Inactive Publication Date: 2016-10-12
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] However, if the strength of the aluminum alloy plate is high, the probability of occurrence of edge cracks during rolling increases, which may reduce productivity.

Method used

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  • Aluminum alloy sheet

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Effect test

Embodiment

[0102] Next, about the aluminum alloy plate of this invention, the Example which satisfies the requirement of this invention is compared with the comparative example which does not satisfy the requirement of this invention, and it demonstrates concretely.

[0103] [Preparation of test material]

[0104]An aluminum alloy having a composition shown in Table 1 was melted, and an ingot (about 4 tons in weight) was produced by semi-continuous casting. Carry out homogenization heat treatment for the ingot (480°C for test materials 1-8, 12-19, 550°C for test materials 9, 10, and 20, 400°C for test material 11, and 380°C for test material 21. ℃, the test material 22 is 580 ℃). Then implement hot rolling (starting temperature: 400°C for test materials 1-8, 12-19, the same temperature as the soaking temperature for test materials 9-11, 20-22, end temperature: 330°C, starting plate thickness : 580mm, final plate thickness: 2mm), made into a hot-rolled plate. Thereafter, cold rolling w...

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Abstract

The invention aims to provide an aluminum alloy sheet, wherein a plating layer is difficult to strip, the strength is high, edge cracks in a rolling process are inhibited. The aluminum alloy sheet is characterized in that the aluminum alloy sheet contains 4.7-6.0 mass% of Mg, lower than 0.20 mass% of Fe, lower than 0.10 mass% of Si, at least one of 0.005-0.400 mass% of Cu and 0.005-0.500 mass% of Zn, the total content of Cu and Zn is lower than 0.500 mass%, the balance includes Al and unavoidable impurities, the amount of solid solution Mg is higher than 3.8 mass%, and the 0.2% yield strength is 250-400 MPa.

Description

technical field [0001] The present invention relates to an aluminum alloy plate, and specifically relates to an aluminum alloy plate that can be used for structural members such as an inner chassis provided inside an electronic device. Background technique [0002] Although this applies to all electronic devices, among electronic devices, there is a great demand for reducing the weight of various mobile devices (portable devices) that are predicated on portability. [0003] Therefore, it has been proposed to replace the various components inside the electronic equipment composed of relatively heavy iron alloys with aluminum alloys, so as to reduce the weight of the entire electronic equipment. [0004] For example, Patent Document 1 proposes a material for conductive parts of electrical and electronic equipment characterized by containing Mg: 0.5 to 5.0% by weight, and the balance being Al and unavoidable impurities. [0005] prior art literature [0006] patent documents ...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22C21/06C22F1/047
CPCC22C21/06C22C21/08C22F1/047C22C1/026C22C21/10B21B2003/001
Inventor 阿部智子金田大辅小林一德
Owner KOBE STEEL LTD
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