Title:
THICK ALUMINUM ALLOY PLATE
Document Type and Number:
WIPO Patent Application WO/2018/159447
Kind Code:
A1
Abstract:
Provided is a thick aluminum alloy plate formed of an aluminum alloy containing 2.0-5.0 mass% Mg, the thick aluminum alloy plate being characterized in that: the plate thickness of the thick aluminum alloy plate is 300-400 mm; and that, assuming that, (i) among porosities having circle-equivalent diameters of 50 μｍ or greater at positions at center sections in the plate-thickness direction and individual positions at 0.39-0.48 Wa in the plate-width direction, the maximum value thereof is A (pores/cm2), and that, (ii) among porosities having circle-equivalent diameters of 50 μm or greater at positions at center sections in the plate-thickness direction and individual positions at 0.12-0.30 Wa in the plate-width direction, the maximum value thereof is B (pores/cm2), then A is 160 pores/cm2 or less, and B is at least 1.15-times greater than A. With the present invention, it is possible to provide a thick Al-Mg-based aluminum alloy plate that is suitable as a material for a vacuum container frame section and that has superior fatigue strength.
Inventors:
KUBO TAKASHI (JP)
YAMADA TATSUYA (JP)
YAMADA TATSUYA (JP)
Application Number:
PCT/JP2018/006449
Publication Date:
September 07, 2018
Filing Date:
February 22, 2018
Export Citation:
Assignee:
UACJ CORP (JP)
International Classes:
C22C21/06; B22D11/00; B22D11/049; C22F1/047
Foreign References:
| JP2005074453A | 2005-03-24 | |||
| JPH11320034A | 1999-11-24 | |||
| JP2007070672A | 2007-03-22 |
Attorney, Agent or Firm:
ASHITABA INTERNATIONAL PATENT OFFICE (JP)
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