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Mechanical properties and microstructures of Al-Mg-Sc alloys

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Abstract

The mechanical properties of Al-(Mg)-0.5Sc alloys have been investigated. Room-temperature tensile and toughness properties were found to reflect a superposition of the properties of Al-Mg and Al-0.5Sc alloys and are quite competitive with high-performance Al alloys. A combination of substructure refinement by Mg and stabilization by Al3Sc precipitates produces exceptional superplasticity as exemplified by superplastic forming (SPF) elongations in excess of 1000 pct at a strain rate of 0.01 s-1. Overall, these alloys demonstrate an extremely attractive combination of strength, toughness, density, and SPF fabricability.

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References

  1. Aluminum Lithium Alloys, T.H. Sanders, Jr. and E.A. Starke, Jr., eds., AIME, New York, NY, 1981.

    Google Scholar 

  2. Aluminum Lithium Alloys II, T.H. Sanders, Jr. and E.A. Starke, Jr., eds., AIME, New York, NY, 1983.

    Google Scholar 

  3. Aluminum Lithium Alloys III, C. Baker, P.J. Gregson, S.J. Harris, and C.J. Peel, eds., The Institute of Metals, London, 1986.

    Google Scholar 

  4. T.R. McNelley and A. Garg:Scripta Metall., vol. 18, pp. 917–20.

  5. T.R. McNelley, E.-W. Lee, and M.E. Mills:Metall. Trans. A, 1986, vol. 17A, pp. 1035–41.

    CAS  Google Scholar 

  6. E.-W. Lee, T.R. McNelley, and A.F. Stengel:Metall. Trans. A, 1986, vol. 17A, pp. 1043–50.

    CAS  Google Scholar 

  7. L.A. Willey: United States Patent No. 3,619,181, 1971.

  8. M.E. Drits, S.T. Pavlenko, L.S. Toropova, Yu.G. Bykov, and L.B. Ber:Sov. Phys. Dokl., 1981, vol. 26, pp. 344–46.

    Google Scholar 

  9. M.D. Drits, L.S. Toropova, and Yu.G. Bykov:Metalloved. Term. Obbrab. Met., 1983, vol. 7, pp. 60–63.

    Google Scholar 

  10. V.l. Elagin, V.V. Zakharov, and T.D. Rostova:Metalloved. Term. Obbrab. Met., 1983, vol. 7, pp. 57–60.

    Google Scholar 

  11. N. Blake and M.A. Hopkins:J. Mater. Sci., 1985, vol. 20, pp. 2861–67.

    Article  CAS  Google Scholar 

  12. G.J. Hildeman and R.E. Sanders: United States Patent No. 4,379,719, 1983.

  13. S.L. Langenbeck, J.M. Cox, G.J. Hildeman, D.K. Denzer, R.J. Rioja, C.W. Cho, and J.W. Simon:Elevated Temperature Al Alloy Development, AFWAL Contract No. F33615-81-C-5096, Mar. 1984.

  14. J.G. Kaufman and A.H. Knoll:Mater. Res. Stand., 1964, pp. 1–7.

  15. N.A. Kahn and E.A. Imbembo:Welding Res. Suppl., 1956, pp. 217S–20S.

  16. L.A. Willey: ALCOA Laboratories Physical Metallurgy Division Report 13-62-EH3, 1962.

  17. S.I. Fujikawa, M. Sugaya, H. Takei, and K.I. Hirano:J. Less-Common Met., 1979, vol. 63, pp. 87–97.

    Article  CAS  Google Scholar 

  18. T.H. Sanders, E.A. Ludwiczak, and R.R. Sawtell:Mater. Sci. Eng., 1980, vol. 43, pp. 247–60.

    Article  CAS  Google Scholar 

  19. P. Griffiths and C. Hammond:Acta Metall., 1972, vol. 20, pp. 935–45.

    Article  CAS  Google Scholar 

  20. C.A. Henshall, T.G. Nieh, and J. Wadsworth:SAMPE Ad vancing Technology in Materials and Processes, 1985, vol. 30, pp. 994–1004.

    CAS  Google Scholar 

  21. D. Lee and W.A. Backofen:Trans. TMS-AIME, 1967, vol. 239, pp. 1034–40.

    Google Scholar 

  22. N.E. Paton and C.H. Hamilton:Metall. Trans. A, 1979, vol. 10A, pp. 241–50.

    CAS  Google Scholar 

  23. J.A. Wert, N.E. Paton, C.H. Hamilton, and M.W. Mahoney:Metall. Trans. A, 1981, vol. 12A, pp. 1267–76.

    Google Scholar 

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Authors and Affiliations

  1. ALCOA Laboratories, Alcoa Center, 15069, PA

    Ralph R. Sawtell (Project Manager) & Craig L. Jensen (Senior Scientific Associate)

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  1. Ralph R. Sawtell
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  2. Craig L. Jensen
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Sawtell, R.R., Jensen, C.L. Mechanical properties and microstructures of Al-Mg-Sc alloys. Metall Trans A 21, 421–430 (1990). https://doi.org/10.1007/BF02782422

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  • DOI: https://doi.org/10.1007/BF02782422

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