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The effect of minor alloying elements on the mechanical properties of Al-Cu-Li alloys

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Abstract

The monotonic and cyclic properties of two Al-Cu-Li alloys were investigated. The alloys were similar in composition to aluminum alloy 2020 but had a higher purity and a different ancillary addition. Property-microstructure comparisons are made between the various materials. The modified alloys have a 40 pct higher fracture toughness than TMT 2020 and overall monotonie properties comparable with 7075-T651. In addition, they have a 17 pct higher specific modulus than current high strength aluminum alloys.

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Authors and Affiliations

  1. Institute of Aeronautical Materials, Beijing, People’s Republic of China

    W. X. Feng (Research Metallurgist)

  2. Metallurgical Research, Reynolds Metals, Fourth and Canal Streets, P.O. Box 27003, 23261, Richmond, VA

    F. S. Lin (Research Scientist)

  3. Department of Materials Science, University of Virginia, 22901, Charlottesville, VA

    E. A. Starke (Earnest Oglesby Professor of Materials Science)

Authors
  1. W. X. Feng
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  2. F. S. Lin
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  3. E. A. Starke
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Formerly a Visiting Scholar at the Lockheed-Georgia Company, Marietta, GA

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Feng, W.X., Lin, F.S. & Starke, E.A. The effect of minor alloying elements on the mechanical properties of Al-Cu-Li alloys. Metall Trans A 15, 1209–1220 (1984). https://doi.org/10.1007/BF02644715

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