Title:
CORROSION RESISTANT 6000 SERIES ALLOY SUITABLE FOR AEROSPACE APPLICATIONS
Document Type and Number:
WIPO Patent Application WO2001092591
Kind Code:
A3
Abstract:
There is claimed an aerospace alloy having improved corrosion resistance performance, particularly intergranular corrosion resistance. The alloy consisting essentially of: about 0.6-1.15 wt. % silicon, about 0.6-1.0 wt. % copper, about 0.8-1.2 wt. % magnesium, about 0.55-0.86 wt. % zinc, less than about 0.1 wt. % manganese, about 0.2-0.3 wt. % chromium, the balance aluminum, incidental elements and impurities. While it is preferably made into sheet or plate product forms, it can also be extruded. Products made from this alloy exhibit at least about 5 % greater yield strength and about 45 % or greater resistance to intergranular corrosion attack than their 6013-T6 counterparts, as measured by average depth of corrosion after 24 hours exposure to an aqueous NaCl-H>22< solution per ASTM Standard G110 (1992).
Inventors:
MAGNUSEN PAUL E (US)
COLVIN EDWARD L (US)
RIOJA ROBERTO J (US)
COLVIN EDWARD L (US)
RIOJA ROBERTO J (US)
Application Number:
PCT/US2001/017803
Publication Date:
May 30, 2002
Filing Date:
June 01, 2001
Export Citation:
Assignee:
ALCOA INC (US)
MAGNUSEN PAUL E (US)
COLVIN EDWARD L (US)
RIOJA ROBERTO J (US)
MAGNUSEN PAUL E (US)
COLVIN EDWARD L (US)
RIOJA ROBERTO J (US)
International Classes:
B64C1/00; C22C21/02; C22C21/08; C22C21/14; C22C21/16; C22F1/05; C22F1/18; (IPC1-7): C22C21/08; C22C21/06; C22F1/05
Domestic Patent References:
| WO1996035819A1 | 1996-11-14 | |||
| WO1996012829A1 | 1996-05-02 |
Foreign References:
| US5858134A | 1999-01-12 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 017, no. 468 (C - 1102) 26 August 1993 (1993-08-26)
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