Analysis of Split Patterns in ?-?’ Ni Alloys

Abstract

Pairs of γ’ particles in different Ni base alloys are investigated in order to determine the mechanism responsible for the formation of several particle arrays. Special attention is given to symmetrically arranged particles or the split patterns i.e., they have been believed to result from the splitting of large particles. High resolution electron microscopy is used to determine the translation domains of coherent γ’ particles. The [001] zone axis allows determination of all possible translations due to differently nucleated domains. About 72 % of particle pairs forming splitting configurations are in the out-of-phase relationship (different translation order domains), indicating that most adjacent pairs are not formed by the splitting of a large particle. On the other hand, particles in symmetrical array (quartets) always have at least one particle with a different translation order domain. Additionally, the frequency of out-of-phase pairs is 78 % in quartet configurations. Calculation of probabilities shows that the quartet split patterns are not formed by splitting but most likely by means of migration due to diffusion.

This is a preview of subscription content, access via your institution.

We’re sorry, something doesn't seem to be working properly.

Please try refreshing the page. If that doesn't work, please contact support so we can address the problem.

References

  1. 1.

    T. Miyazaki, H. Imamura and T. Kozakai, Mater. Sci. Eng. 54,9(1982) and M. Doi, T. Miyazaki and T. Wakatsuki, Mater. Sci. Eng. 67 247 (1984).

    CAS  Article  Google Scholar 

  2. 2.

    M. J. Kaufman, P. W. Voorhees, W. C. Johnson and F. S. Biancanello, Metall. Trans. A 20 2171 (1989).

    Article  Google Scholar 

  3. 3.

    A. G. Khachaturyan, S. V. Semenovskaya and J. W. Jr. Morris, Acta Metall. 36 1563 (1988).

    CAS  Article  Google Scholar 

  4. 4.

    Y. Wang, L.-Q. Chen and A. G. Khachaturyan, Phys. Rev. B 46 11194 (1992).

    CAS  Article  Google Scholar 

  5. 5.

    J. Colin, J. Grilhè, and N. Junqua, Act. Mater. 46 1249 (1998).

    CAS  Article  Google Scholar 

  6. 6.

    C-H. Su and P. W. Voorhees, Acta Mater. 44 1987, 2001 (1996).

    CAS  Article  Google Scholar 

  7. 7.

    H.A. Calderon, J.G. Cabañas-Moreno and T. Mori, Phil. Mag. Lett. 80 669 (2000).

  8. 8.

    H. A. Calderon, G. Kostorz, L. Calzado-Lopez, C. Kisielowski and T. Mori, Phil. Mag. Letters, 85 51 (2005).

    CAS  Article  Google Scholar 

  9. 9.

    P-R. Cha, D-H. Yeon and S-H. Chung, Scripta Mater. 52 1241 (2005).

    CAS  Article  Google Scholar 

  10. 10.

    H. A. Calderon. C. F. Kisielowski, T. Mori. Accepted for publication Phil. Mag. Letters.

  11. 11.

    W. C. Johnson and J. K. Lee, Metall. Trans. A, 10 1141 (1979).

    Article  Google Scholar 

  12. 12.

    Y. Wang and A. G. Khachaturyan, Scripta Metall. Mater. 31 1425 (1994).

    CAS  Article  Google Scholar 

  13. 13.

    D. Banerjee, R. Banerjee and Y. Wang, Scripta Mater. 41 1023 (1999).

    CAS  Article  Google Scholar 

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to Hector A. Calderon.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Calderon, H.A., Kisielowski, C. & Mori, T. Analysis of Split Patterns in ?-?’ Ni Alloys. MRS Online Proceedings Library 979, 1137 (2006). https://doi.org/10.1557/PROC-979-0979-HH11-37

Download citation