Title:
ALUMINUM ALLOY EXTRUSION AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2022/264959
Kind Code:
A1
Abstract:
The present invention provides an aluminum alloy extrusion having a high tensile strength and a high offset yield strength at low cost. The aluminum alloy extrusion comprises 0.90 mass% to 2.00 mass% Si, 0.65 mass% to 0.90 mass% Mg, 0.25 mass% to 0.50 mass% Cu, 0.050 mass% to 0.49 mass% Fe, 0.10 mass% to 0.25 mass% Zr, 0.010 mass% to 0.10 mass% Ti, and an amount of B that, by mass, is 0.050 to 1.0 times the amount of Ti, with the remainder being made up of Al and unavoidable impurities. In a cross-section of aluminum alloy extrusion perpendicular to the extrusion direction, the area ratio occupied by crystal grains having an aspect ratio of 5.0 or below and a length in the long axis direction of 50 μm to 1000 μm is greater than or equal to 90.0%, and the electrical conductivity of the surface is less than or equal to 51.1 IACS%.
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Inventors:
MARUYAMA TAKUMI (JP)
OHASHI YOSHIMASA (JP)
XIANG JUAN (JP)
OHASHI YOSHIMASA (JP)
XIANG JUAN (JP)
Application Number:
PCT/JP2022/023598
Publication Date:
December 22, 2022
Filing Date:
June 13, 2022
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
International Classes:
C22C21/02; C22F1/043; C22F1/05; C22F1/00
Foreign References:
| JPH10219381A | 1998-08-18 | |||
| JP2000144293A | 2000-05-26 | |||
| JPH11310841A | 1999-11-09 | |||
| JP2003181530A | 2003-07-02 | |||
| JP2005105317A | 2005-04-21 | |||
| JP2005105327A | 2005-04-21 |
Attorney, Agent or Firm:
SHIMIZU Yoshihito et al. (JP)
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