High-damage tolerant alloy product in particular for...

Details High-damage tolerant alloy product in particular for... High-damage tolerant alloy product in particular for...

2004-05-28

2011-10-25

King, Roy (Department: 1733)

Metal treatment

Stock

Age or precipitation hardened or strengthened

C420S532000, C420S539000, C420S553000, C148S693000, C148S701000

Reexamination Certificate

active

08043445

ABSTRACT:
The invention relates to an aluminium alloy wrought product with high strength and fracture toughness and high fatigue resistance and low fatigue crack growth rate, and having a composition for the alloy comprising, in weight %, about 0.3 to 1.0% magnesium (Mg), about 4.4 to 5.5% copper (Cu), about 0 to 0.20% iron (Fe), about 0 to 0.20% silicon (Si), about 0 to 0.40% zinc (Zn), and Mn in a range 0.15 to 0.8 as a dispersoids forming element in combination with one or more of dispersoids forming elements selected from the group consisting of: (Zr, Sc, Cr, Hf, Ag, Ti, V), in ranges of: about 0 to 0.5% zirconium (Zr), about 0 to 0.7% scandium (Sc), about 0 to 0.4% chromium (Cr), about 0 to 0.3% hafnium (Hf), about 0 to 0.4% titanium (Ti), about 0 to 1.0% silver (Ag), the balance being aluminium (Al) and other incidental elements, and whereby there is a limitation of the Cu—Mg content such that −1.1[Mg]+5.38≦[Cu]≦5.5. The invention further relates to a method of manufacturing such a product.

REFERENCES:
patent: 3637441 (1972-01-01), Lyle, Jr. et al.
patent: 3826688 (1974-07-01), Levy
patent: 4772342 (1988-09-01), Polmear
patent: 5376192 (1994-12-01), Cassada, III
patent: 5512112 (1996-04-01), Cassada, III
patent: 5593516 (1997-01-01), Cassada, III
patent: 5652063 (1997-07-01), Karabin
patent: 5879475 (1999-03-01), Karabin
patent: 6569542 (2003-05-01), Warner et al.
patent: 7704333 (2010-04-01), Cho et al.
patent: 2001/0006082 (2001-07-01), Warner et al.
patent: 2003/0207141 (2003-11-01), Warner et al.
patent: 0829552 (1998-03-01), None
patent: 0989195 (2000-03-01), None
patent: 1114877 (2001-07-01), None
patent: 2175647 (2002-11-01), None
patent: 1625043 (1995-10-01), None
patent: 664570 (1979-05-01), None
patent: 9405820 (1994-03-01), None
“Aluminum and Aluminum Alloys”, ASM International, 1993, p. 20-21.
Lakhtin Yu. M. et al., Material Science, Moscow, “Machine Construction,” 1980, p. 40.

Affiliated with

Also associated with

Rating

High-damage tolerant alloy product in particular for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High-damage tolerant alloy product in particular for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-damage tolerant alloy product in particular for... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4289896