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Metal Science and Heat Treatment

, Volume 53, Issue 9–10, pp 414–419 | Cite as

Special features of crystallization of scandium-alloyed aluminum alloys

  • V. V. Zakharov
Article

Topics of modification of the grain structure and of formation of supersaturated solid solution in crystallization of melts of scandium-alloyed aluminum alloys are considered. The strong modifying property of scandium is a result of the effective inoculating action of Al3Sc particles and their great number in unit volume of the melt. Scandium is susceptible to formation of supersaturated solid solutions at enhanced crystallization rates, and an additive of zirconium intensifies this susceptibility.

Key words

aluminum alloys scandium additive melt crystallization modification of grain structure supersaturation of solution 

References

  1. 1.
    L. A. Willy, Patent U.S. 3.619.181 (1971).Google Scholar
  2. 2.
    M. E. Drits, L. S. Toropova, and Yu. G. Bykov, “Effect of REM on mechanical properties of alloy Al – 6.5% Mg,” Metalloved. Term. Obrab. Met., No. 10, 35 – 37 (1980).Google Scholar
  3. 3.
    V. I. Elagin, V. V. Zakharov, and T. D. Rostova, “Prospects of scandium alloying of aluminum,” Tsvetn. Met., No. 12, 96 – 99 (1983).Google Scholar
  4. 4.
    V. I. Elagin, V. V. Zakharov, T. D. Rostova, and Yu. A. Filatov, “Some physical metallurgy principles of alloying, production process, and heat treatment of aluminum alloys with scandium additives,” Tekhnol. Legk. Splavov, No. 9, 27 – 34 (1989).Google Scholar
  5. 5.
    V. I. Elagin, V. V. Zakharov, S. G. Pavlenko, and T. D. Rostova, “Effect of zirconium additive on aging of Al – Sc alloys,” Fiz. Met. Metalloved., 60(1), 97 – 100 (1985).Google Scholar
  6. 6.
    Yu. A. Filatov, “Deformable alloys based on the Al – Mg – Sc system,” Metalloved. Term. Obrab. Met., No. 6, 33 – 36 (1996).Google Scholar
  7. 7.
    V. V. Zakharov and T. D. Rostova, “High-strength weldable alloy 1970 based on the Al – Zn – Mg system,” Metalloved. Term. Obrab. Met., No. 4, 10 – 17 (2005).Google Scholar
  8. 8.
    V. I. Elagin, V. V. Zakharov, Yu. A. Filatov, and T. D. Rostova, “Development of promising alloys with addition of scandium,” in: Promising Technologies of Light and Special Alloys [in Russian], Fizmatgiz, Moscow (2006), pp. 181 – 193.Google Scholar
  9. 9.
    V. V. Zakharov, V. I. Elagin, T. D. Rostova, and Yu. A. Filatov, “Physical metallurgy principles of scandium alloying of aluminum alloys,” Tekhnol. Legk. Splavov, No. 1, 67 – 73 (2010).Google Scholar
  10. 10.
    L. K. Lamikhov and G. V. Samsonov, “About modifying aluminum and alloy AL7 with transition metals,” Tsvetn. Met., No. 8, 79 – 82 (1964).Google Scholar
  11. 11.
    S. V. Golubev, O. A. Korzhavina, P. S. Poppel, et al., “Effect of viscosity and resistivity on the structural state of Al – Sc melts and on the structure of cast metal,” Izv. Akad. Nauk SSSR, Metally, No. 1, 46 – 51 (1991).Google Scholar
  12. 12.
    V. V. Zakharov, “Effect of scandium on the structure and properties of aluminum alloys,” Metalloved. Term. Obrab. Met., No. 7, 7 – 15 (2003)Google Scholar
  13. 13.
    F. F. Norman, P. B. Prangnell, and R. S. McEwen, “The solidification behavior of dilute aluminum-scandium alloys,” Acta Mater., 46, 16, 5715 – 5732 (1998).CrossRefGoogle Scholar
  14. 14.
    J. D. Schloz, “Fundamentals of grain refining of aluminum alloys,” Light Metal Age, No. 8, 30 – 37 (2010).Google Scholar
  15. 15.
    V. I. Elagin, V. V. Zakharov, T. V. Rostova, and N. M. Shcheglova, “A study of the structure of commercial plates from alloy 1450 in connection of instability of mechanical properties,” Tekhnol. Legk. Splavov, Nos. 7 – 8, 36 – 42 (1993).Google Scholar
  16. 16.
    V. I. Napalkov and S. V. Makhov, Alloying and Modifying of Aluminum and Magnesium [in Russian], MISiS, Moscow (2002), pp. 322 – 352.Google Scholar
  17. 17.
    I. A. Vauchskii and V. G. Bartashov, “About the conditions of manifestation of the modifying action of scandium in aluminum alloys,” Tekhnol. Legk. Splavov, No. 5, 16 – 19 (1987).Google Scholar
  18. 18.
    L. S. Toropova and A. N. Kamardinkin, “Crystallization of Al – Sc alloys at high cooling rates,” Tsvetn. Met., No. 5, 104 – 106 (1989).Google Scholar
  19. 19.
    M. E. Drits, L. S. Toropova, Yu. G. Bykov, et al., “Metastable Al – Sc phase diagram in the aluminum-rich range,” Izv. Akad. Nauk SSSR, Metally, No. 1, 179 – 182 (1983).Google Scholar
  20. 20.
    F. Palm, “Hypereutectic high strength AlMgSc profile materials,” in: AEROMAG, 2006, 15 – 18th of May, Seattle, Washington, USA.Google Scholar

Copyright information

© Springer Science+Business Media, Inc. 2012

Authors and Affiliations

  • V. V. Zakharov
    • 1
  1. 1.MoscowRussia

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