Aluminum-lithium alloy (4)

Details Aluminum-lithium alloy (4) Aluminum-lithium alloy (4)

1983-12-30

1988-04-05

Rutledge, L. Dewayne

Alloys or metallic compositions

Aluminum base

Copper containing

420534, 420535, 420542, 420543, 420544, 148417, C22C 2100

Patent

active

047357746

ABSTRACT:
An aluminum-lithium alloy exhibiting good fracture toughness and relatively high strength has a nominal composition of 2.5 percent lithium, 1.0 percent magnesium, 1.6 percent copper, 0.12 percent zirconium with the balance being aluminum and trace elements.

REFERENCES:
patent: 2381219 (1945-08-01), Le Baron
patent: 3346370 (1967-10-01), Jagaciak
Starke, Jr., E. A. et al., "New Approaches to Alloy Development in the Al-Li System", Journal of Metals, Aug. 1981.
Lewis, R. E. et al., "Aerospace Structural Applications of Rapidly Solidified Aluminum-Lithium Alloys", Jul. 1983.
Peel, C. J. et al., "The Development and Application of Improved Aluminum-Lithium Alloys", 1983.
Quist, W. E. et al., "Aluminum-Lithium Alloys for Aircraft Structure-An Overview", Dec. 1983.
M. V. Hyatt, "Program to Improve the Fracture Toughness and Fatigue Resistance of Aluminum-Sheet and Plate for Airframe Applns", Technical Report, AFML-TR-73-224, Air Force Material Laboratory, Wright Patterson Air Force Base, Ohio, Sep. 1973.
D. J. Chellman and G. G. Wald, "Age Hardening Behavior of Al-Li-(Cu)-(Mg)-Zr P/M Alloys", Proceedings of the 1982 National Powder Metallurgy Conference, May 24-27, 1982, Quebec, Canada, Progress in Powder Metallurgy 38:361-381, published in 1983.
I. G. Palmer, R. E. Lewis et al., "Effect of Processing Variables on Microstructure and Properties of Two Al-Li-Cu-Mg-Zr Alloys", Proceedings of the Second International Aluminum-Lithium Conference, Apr. 12-14, 1983, Monterey, California, Aluminum-Lithium Alloys II, E. A. Stark, Jr., and T. H. Sanders, Jr., (Eds.), The Metallurgical Society of AIME, Warrendale, PA, pp. 91-110, published in 1984.

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