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Journal of Materials Science

, Volume 26, Issue 6, pp 1485–1496 | Cite as

Comparative study of spinodal decomposition in symmetric and asymmetric Cu-Ni-Cr alloys

  • P. Prasad Rao
  • B. K. Agrawal
  • A. M. Rao
Papers

Abstract

Spinodal decomposition in three alloys of nominal compositions 71Cu-27Ni-2Cr, 45Cu-45Ni-10Cr and 33Cu-52Ni-15Cr were studied by X-ray diffraction technique and transmission electron microscopy. It was found that the first and third alloys are asymmetric in nature while the second is symmetric. The symmetric alloy was found to decompose faster than the asymmetric ones. The asymmetry of the side bands was found to be related to the proportion of phases in the alloy. Electron microscopic studies revealed that during coarsening the major phase increases its connectivity by isolating the minor phase.

Keywords

Polymer Microscopy Electron Microscopy Transmission Electron Microscopy Microscopic Study 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    J. L. Meijering, G. W. Rathenau, M. G. Van Der Steeg and P. B. Braun, J. Inst. Met. 84 (1950–56) 118.Google Scholar
  2. 2.
    J. Manenc, Acta Metall. 6 (1958) 145.CrossRefGoogle Scholar
  3. 3.
    C. K. Wu and G. Thomas, Met. Trans. 8A (1977) 1911.CrossRefGoogle Scholar
  4. 4.
    A. Chou, A. Dutta, G. H. Meier and W. A. Soffa, J. Mater. Sci. 13 (1978) 541.CrossRefGoogle Scholar
  5. 5.
    D. Bower, G. W. Lorimer, I. Saunderson and P. Wilkes, Met. Tech. 7 (1980) 120.CrossRefGoogle Scholar
  6. 6.
    R. Knights and P. Wilkes, Met. Trans. 4 (1973) 2389.CrossRefGoogle Scholar
  7. 7.
    R. I. Saunderson, P. Wilkes and G. W. Lorimer, Acta Metall. 26 (1978) 1357.CrossRefGoogle Scholar
  8. 8.
    P. Prasad Rao, B. K. Agrawal and A. M. Rao, J. Mater. Sci. 21 (1986) 3759.CrossRefGoogle Scholar
  9. 9.
    W. A. Rachinger, J. Sci. Instrum. 25 (1948) 254.CrossRefGoogle Scholar
  10. 10.
    W. B. Pearson, “Handbook of lattice spacings and structures of metals” (Pergamon, New York, 1958) p. 592.Google Scholar
  11. 11.
    V. Daniel and H. Lipson, Proc. R. Soc. A181 (1943) 368.Google Scholar
  12. 12.
    M. Hillert, Acta Metall. 9 (1961) 525.CrossRefGoogle Scholar
  13. 13.
    J. W. Cahn, Trans. Met. Soc. AIME 242 (1968) 166.Google Scholar
  14. 14.
    R. J. Livak and G. Thomas, Acta Metall. 19 (1971) 497.CrossRefGoogle Scholar
  15. 15.
    D. E. Laughlin and J. W. Cahn, ibid. 23 (1975) 329.CrossRefGoogle Scholar
  16. 16.
    T. Miyazaki, S. Takagishi, H. Mori and T. Kozakai, ibid. 28 (1980) 1143.CrossRefGoogle Scholar
  17. 17.
    J. E. Hilliard, Spinodal Decomposition, in “Phase Transformations” edited by H. I. Aaronson (American Society for Metals, Metals Park, OH, 1970) pp. 497–560.Google Scholar
  18. 18.
    R. W. Carpenter, Acta Metall. 15 (1967) 1567.CrossRefGoogle Scholar
  19. 19.
    H. E. Cook and J. E. Hilliard, J. Appl. Phys. 40 (1969) 2191.CrossRefGoogle Scholar
  20. 20.
    T. Miyazaki, T. Shinozawa, H. Murayama and H. Mori, Trans. Jpn. Inst. Met. 17 (1976) 181.CrossRefGoogle Scholar
  21. 21.
    R. Hultgren, P. D. Desai, D. T. Hawkins, M. Gleiser and K. K. Kelly, “Selected values of the thermodynamic properties of binary alloys” (American Society for Metals, Metals Park, OH, 1973) p. 763.Google Scholar
  22. 22.
    C. J. Smithels, “Metals Reference Book” (Butterworths, London, 1976).Google Scholar
  23. 23.
    I. M. Lifshitz and V. V. Slyozov, J. Phys. Chem. Solids 19 (1961) 35.CrossRefGoogle Scholar
  24. 24.
    C. Wagner, Z. Elektrochem. 65 (1961) 581.Google Scholar
  25. 25.
    V. Daniel and H. Lipson, Proc. R. Soc. 182 (1944) 378.CrossRefGoogle Scholar
  26. 26.
    M. E. Hargreaves, Acta Crystallogr. 4 (1951) 301.CrossRefGoogle Scholar
  27. 27.
    T. J. Tiedema, J. Bouman and W. G. Burgers, Acta Metall. 5 (1957) 310.CrossRefGoogle Scholar
  28. 28.
    A. G. Katchaturyan, Phys. Status. Solidi 35 (1969) 19.Google Scholar
  29. 29.
    E. P. Butler and G. Thomas, Acta Metall. 18 (1970) 347.CrossRefGoogle Scholar
  30. 30.
    G. de Vos, J. Appl. Phys. 37 (1966) 1100.CrossRefGoogle Scholar

Copyright information

© Chapman and Hall Ltd. 1991

Authors and Affiliations

  • P. Prasad Rao
    • 1
  • B. K. Agrawal
    • 2
  • A. M. Rao
    • 2
  1. 1.Department of Metallurgical EngineeringKarnataka Regional Engineering CollegeSurathkal, KarnatakaIndia
  2. 2.Department of Metallurgical EngineeringIndian Institute of TechnologyBombayIndia

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