Title:
HIGH STRENGTH EXTRUDED ALUMINUM ALLOY MATERIAL WITH EXCELLENT CORROSION RESISTANCE AND FAVORABLE QUENCHING PROPERTIES AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2017/169962
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a high strength extruded aluminum alloy material with which high strength is obtained by air-cooling immediately after extrusion and which has excellent stress corrosion cracking resistance, and a manufacturing method therefor. This high strength extruded aluminum alloy material with excellent corrosion resistance and favorable quenching characteristics is characterized in containing, all in mass%, Zn: 6.0-8.0%, Mg: 1.50-2.70%, Cu: 0.20-1.50%, Ti: 0.005-0.05%, and Zr: 0.10-0.25% as well as Mn: 0.3% or less, Cr: 0.05% or less, Sr: 0.25% or less, Zr+Mn+Cr+Sr being in the range of 0.10-0.50% and the balance being made of Al and unavoidable impurities.
Inventors:
SHIBATA KARIN (JP)
YOSHIDA TOMOO (JP)
YOSHIDA TOMOO (JP)
Application Number:
PCT/JP2017/011145
Publication Date:
October 05, 2017
Filing Date:
March 21, 2017
Export Citation:
Assignee:
AISIN KEIKINZOKU CO LTD (JP)
International Classes:
C22C21/10; B21C23/00; C22F1/053; C22F1/00
Foreign References:
| JP2014125676A | 2014-07-07 | |||
| JP2015221924A | 2015-12-10 | |||
| JP2009013479A | 2009-01-22 | |||
| US20120234440A1 | 2012-09-20 |
Other References:
TKACHENKO E.A. ET AL: "The Properties and Structure of High Strength Aluminum 1933 Alloy Forqinqs", ALUMINUM ALLOYS: THEIR PHYSICAL AND MECHANICAL PROPERTIES - PROCEEDINQS ICAA5 - PART 3, 1 July 1996 (1996-07-01) - 5 July 1996 (1996-07-05), pages 1819 - 1822, XP055748001
ASTM: "Standard Practice for Extrusion Press Solution Heat Treatment for Aluminum alloys", ASTM STANDARD B807 / B807M - 06, 2011, pages 615 - 619, XP055748021
L. F. MONDOLFO: "Aluminum Alloys: Structure and Properties", BUTTERWORTH & CO, 1976, article "Aluminum-Zinc-Magnesium Alloys", XP005574802
ANONYMOUS: "International Alloy Designations and Chemical Composition Limits for Wrought Aluminum and Wrought Aluminum Alloys", ALUMINUM ASSOCIATION, January 2015 (2015-01-01), XP055748004, Retrieved from the Internet
ASTM: "Standard Practice for Extrusion Press Solution Heat Treatment for Aluminum alloys", ASTM STANDARD B807 / B807M - 06, 2011, pages 615 - 619, XP055748021
L. F. MONDOLFO: "Aluminum Alloys: Structure and Properties", BUTTERWORTH & CO, 1976, article "Aluminum-Zinc-Magnesium Alloys", XP005574802
ANONYMOUS: "International Alloy Designations and Chemical Composition Limits for Wrought Aluminum and Wrought Aluminum Alloys", ALUMINUM ASSOCIATION, January 2015 (2015-01-01), XP055748004, Retrieved from the Internet
Attorney, Agent or Firm:
OTANI Kaichi (JP)
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