Alloys or metallic compositions – Aluminum base – Copper containing
Patent
1993-08-10
1995-10-03
Simmons, David A.
Alloys or metallic compositions
Aluminum base
Copper containing
148695, 148698, 148699, 148700, 148701, 148416, 148417, 148418, 148438, 148439, 420531, 420532, 420533, 420539, 420540, 420541, 420542, 420543, 420545, 420552, 420553, C22C 2112
Patent
active
054550033
ABSTRACT:
A method is disclosed for the production of aluminum-copper-lithium alloys that exhibit improved strength and fracture toughness at cryogenic temperatures. Improved cryogenic properties are achieved by controlling the composition of the alloy, along with processing parameters such as the amount of cold-work and artificial aging. The ability to attain substantially equal or greater strength and fracture toughness at cryogenic temperature in comparison to room temperature allows for use of the alloys in cryogenic tanks for space launch vehicles and the like.
REFERENCES:
patent: 2381219 (1945-08-01), LeBaron
patent: 2915391 (1959-12-01), Criner
patent: 3306717 (1967-02-01), Lindstrand
patent: 4526630 (1985-04-01), Field
patent: 4624717 (1986-11-01), Miller
patent: 4648913 (1987-03-01), Hunt, Jr. et al.
patent: 4752343 (1988-06-01), Dubost et al.
patent: 4758286 (1988-07-01), Dubost et al.
patent: 4772342 (1988-09-01), Polmear
patent: 4795502 (1989-01-01), Cho
patent: 4797165 (1989-01-01), Bretz et al.
patent: 4806174 (1989-02-01), Cho et al.
patent: 4812178 (1989-03-01), Dubost
patent: 4816087 (1989-03-01), Cho
patent: 4832910 (1989-05-01), Rioja et al.
patent: 4840682 (1989-06-01), Curtis et al.
patent: 4840683 (1989-06-01), Dubost
patent: 4844750 (1989-07-01), Cho et al.
patent: 4848647 (1989-07-01), Gentry et al.
patent: 4869870 (1989-09-01), Rioja et al.
patent: 5032359 (1991-07-01), Pickens et al.
patent: 5116572 (1992-05-01), Narayanan et al.
patent: 5122339 (1992-06-01), Pickens et al.
patent: 5137686 (1992-08-01), Rioja et al.
patent: 5151136 (1992-09-01), Witters et al.
patent: 5259897 (1993-11-01), Pickens et al.
"Aluminum-Lithium", The Effect of Zn on Nucleation in Al-Cu-Li-Ag-Mg Alloy, Weldalite 049 (X2094), J. R. Pickens, L. S. Kramer, T. J. Langan, F. H. Heubaum, Martin Marietta Laboratories, Baltimore, Md., USA, vol. 1, 1991, pp. 357-362.
"Registration Record of Aluminum Association Designations and Chemical Composition Limits for Wrought Aluminum and Wrought Aluminum Alloys," Revised Jan. 1989, the Alum. Assoc., Inc., pp. 2-8+12-15.
"Aging Phenomena of Al-Li-Mg Alloy Affected by Additional Elements," Hayashi et al, Journal of Japan Institute of Light Metals, vol. 32, No. 7, Jul. 1982, pp. 350-355 (with full translation).
Pickens Joseph R.
Tack William T.
Chin Gay
Koehler Robert R.
Martin Marietta Corporation
Rees Brian J.
Simmons David A.
LandOfFree
Al-Cu-Li alloys with improved cryogenic fracture toughness does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Al-Cu-Li alloys with improved cryogenic fracture toughness, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Al-Cu-Li alloys with improved cryogenic fracture toughness will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1075898