Metal alloy product and method for producing same

Metal treatment – Stock – Age or precipitation hardened or strengthened

Reexamination Certificate

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C148S415000, C148S416000, C148S549000

Reexamination Certificate

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06846369

ABSTRACT:
A method for producing a cast aluminum alloy article having high strength and/or toughness is provided. The method includes providing a molten aluminum alloy, centrifugally casting the molten aluminum alloy to form a cast body; and hot isostatically processing the cast body to form a hipped body. The hipped body may optionally be solution heat treated to form a heat treated body, which may subsequently be precipitation hardened to further enhance the properties of the cast product as desired. The method allows the production of cast aluminum alloy articles having physical and mechanical properties similar to those obtained for articles produced from corresponding aluminum alloy chemistries by wrought techniques.

REFERENCES:
patent: 3496624 (1970-02-01), Kerr et al.
patent: 3791876 (1974-02-01), Kroger
patent: 4055417 (1977-10-01), Komiyama et al.
patent: 4693747 (1987-09-01), Bretz et al.
patent: 4715893 (1987-12-01), Skinner et al.
patent: 5032359 (1991-07-01), Pickens et al.
patent: 5303682 (1994-04-01), Donahue et al.
patent: 5498393 (1996-03-01), Horimura et al.
patent: 5520754 (1996-05-01), Yaney et al.
patent: 5527403 (1996-06-01), Schirra et al.
patent: 5571347 (1996-11-01), Bergsma
patent: 5595615 (1997-01-01), Shibata et al.
patent: 5603783 (1997-02-01), Ferreira
patent: 5744734 (1998-04-01), Yang et al.
patent: 5837070 (1998-11-01), Sainfort et al.
patent: 5846348 (1998-12-01), Sakoda et al.
patent: 5911843 (1999-06-01), Bergsma
patent: 6120625 (2000-09-01), Zhou et al.
patent: 6248189 (2001-06-01), Shaffer et al.
patent: 6350329 (2002-02-01), Troeger et al.
patent: 20010023719 (2001-09-01), Troeger et al.
“Aluminum and Aluminum Alloys”, ASM International, 1993, p 72, 73.*
“Metals Handbook: Desk Edition”, 2nded., ASM International, 1998, p. 464.*
“ASM Handbook: vol. 9 Metallography and Microstructures”, ASM International, (1985), pp 357-388.*
Brick, Robert M. et al., Structure and Properties of Engineering Materials, 1977, title p. and pp. 87-91, Fourth Edition, McGraw-Hill Publishing Company, New York.
Chu, H.P. et al., Fracture Toughness and Stress Corrosion Properties of Aluminum Alloy Hand Forgings, Journal of Materials, Mar. 1972, pp. 95-99, vol. 7, #1.
Dieter, George E., Mechanical Metallurgy, 1986, cover, title p. and pp. 526-529, Third Edition, McGraw-Hill Publishing Company, New York.
Macmaster, F.J. et al., Aluminum alloy 6069 part II; fracture toughness of 6061-T6 and 6069-T6, Materials Science and Engineering, 2000, pp. 54-59, A289, Elsevier Science S.A.
Yahr, G.T., Prevention of Nonductile Fracture in 6061-T6 Aluminum Nuclear Pressure Vessels, Journal of Pressure Vessel Technology, May 1997, pp. 150-156, vol. 119.
Alcoa TMD Report No. 5, (available at least by Aug. 3, 1999).
the Aluminum Association, Inc., “Aluminum standards and data”, pp. 4-15, (1979).
American Foundrymen's Society, “Copper-Base Alloys Foundry Practice”, pp. 68-72, (1965).
ASM Handbook, vol. 2 Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, p. 141.
Barré, International News Magazine of the Investment Casting Institute, pp. 14-15, (Aug., 1998).
Barré, “Hot Isostatic Processing—A Solution into the 21stCentury”, (available at least by Aug 3, 1999).
Copper Development Association, “Copper Casting Alloys”, p. 96, (1994).
Janco, “Centrifugal Casting”, pp. 1-6, (1988).
Johnson Brass and Machine Foundry, Inc. web site, (www.johnsoncentrifugal.com) materials, (Aug. 6, 1999).
Kittyhawk Products web site (www.kittyhawkinc.com) materials, (available at least by Aug. 6, 1999).
Kittyhawk Products, Hot Isostatic Processing information, (available at least by Aug. 3, 1999).
PTI, Hot Isostatic Pressing Information, (available at least by Aug. 3, 1999).

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