Skip to main content
SpringerLink
Log in

Tweed structures associated with Fcc-Fct transformations in Fe-Pd alloys

  • Published:
Metallurgical Transactions A Aims and scope Submit manuscript

Abstract

The tweed microstructure associated with fcc-fct martensitic transformation in Fe-Pd alloys containing about 30 at. pct Pd was investigated by transmission electron microscopy and the selected area diffraction. It was observed that the tweed contrast consisting of {011}/<01ī> striations and accompanying the diffuse streaks became distinct from a temperature nearly 100 K above the Ms with lowering temperature. The tweed contrast was found to be induced by the static displacement of atoms, δ{011}/[01ī], associated with the formation of disc-shaped martensite nuclei on the {110} planes of the austenite. The tweed microstructure persistently remained in the fct martensite in the early stage of the transformation, where the degree of tetragonality is small and the c-axis directions of the small fct martensite variants are tilted against each other, giving rise to the tweed pattern. A similar tweed contrast observed in the initial stage of ordering in a stoichiometric Fe-Pd alloy was also explained by a strain contrast effect arising from an elastic shear strain induced by the nucleation of short range order particles with tetragonal distortion.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. L. R. Testardi and T. B. Bateman:Phys. Rev., 1967, vol. 154, pp. 402–10.

    Article  ADS  CAS  Google Scholar 

  2. D. J. Gunton and G. A. Saunders:Solid St. Commun., 1974, vol. 14, pp. 865–68.

    Article  CAS  Google Scholar 

  3. C. M. Hwang, M. Meichle, M. B. Salamon, and C. M. Wayman:J. de Phys., 1982, vol. 43, pp. 231–36.

    Google Scholar 

  4. T. Suzuki, M. Takagi, A. Nagasawa, and N. Nakanishi:J. Mat. Sci., 1981, vol. 16, pp. 3013–20.

    Article  CAS  Google Scholar 

  5. G. D. Sandrock, A. J. Perkins, and R. F. Heheman:Metall. Trans., 1971, vol. 2, pp. 2769–81.

    CAS  Google Scholar 

  6. A. Nagasawa:J. Phys. Soc. Japan, 1976, vol. 40, pp. 93–99.

    Article  ADS  CAS  Google Scholar 

  7. P. Moine, G. M. Michal, and R. Sinclair:Acta Metall., 1982, vol. 30, pp. 109–23.

    Article  CAS  Google Scholar 

  8. R. Oshima and M. Sugiyama:J. de Phys., 1982, vol. 43, pp. c4383–88.

    Google Scholar 

  9. L. E. Tanner:Phil. Mag., 1966, vol. 14, pp. 111–30.

    CAS  Google Scholar 

  10. L. Delaey, A. J. Perkins, and T. B. Massalski:J. Mat. Sci., 1972, vol. 7, pp. 1197–215.

    Article  CAS  Google Scholar 

  11. J. M. Robertson and C. M. Wayman:Phil. Mag. A, 1983, vol. 48, pp. 421–42.

    CAS  Google Scholar 

  12. J. M. Robertson and C. M. Wayman:Phil. Mag. A, 1983, vol. 48, pp. 443–67.

    CAS  Google Scholar 

  13. J. M. Robertson and C. M. Wayman:Phil. Mag. A, 1983, vol. 48, pp. 629–47.

    CAS  Google Scholar 

  14. O. Kubaschewski:Iron-Binary Phase Diagrams, 1st ed., Springer-Verlag, Berlin, 1982, pp. 88–91.

    Google Scholar 

  15. M. Sugiyama, R. Oshima, and F. E. Fujita:Trans. Japan Inst. Met., 1984, vol. 25, pp. 585–92.

    CAS  Google Scholar 

  16. M. Sato, H. Grier, S. M. Shapiro, and H. Miyajima:J. Phys. F., 1982, vol. 12, pp. 2117–29.

    Article  ADS  CAS  Google Scholar 

  17. M. Sugiyama, S. Harada, and R. Oshima:Scripta Metall., 1985, vol. 19, pp. 315–17.

    Article  CAS  Google Scholar 

  18. Y. Yamada:Metall. Trans. A, 1988, vol. 19A, pp. 777–81.

    CAS  Google Scholar 

  19. P. C. Clapp:Phys. Stat. Solidi. (b), 1973, vol. 57, pp. 561–69.

    CAS  Google Scholar 

  20. P. B. Hirsch, A. Howie, P. B. Nicholson, D. W. Pashley, and M. J. Whelan:Electron Microscopy of Thin Crystals, 2nd ed., Robert E. Krieger Publishing Co., Malabar, FL, 1977, chs. 4, 6, 7, 8, and 10.

    Google Scholar 

  21. M. Hirabayashi and S. Weissmann:Acta Metall., 1962, vol. 10, pp. 25–36.

    Article  CAS  Google Scholar 

  22. J. M. Penisson, A. Bourret, and Ph. Eurin:Acta Metall., 1971, vol. 19, pp. 1195–204.

    Article  CAS  Google Scholar 

  23. P. R. Okamoto and G. Thomas:Acta Metall., 1971, vol. 19, pp. 825–41.

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Material Physics, Faculty of Engineering Science. Osaka University, 560, Toyonaka, Osaka, Japan

    R. Oshima & F. E. Fujita

  2. Graduate Student at Osaka University, is with the R & D Laboratories-2 I, Nippon Steel Corporation, Kawasaki, 211, Kanagawa, Japan

    M. Sugiyama

Authors
  1. R. Oshima
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. M. Sugiyama
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. F. E. Fujita
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

This paper is based on a presentation made in the symposium “Pretransformation Behavior Related to Displacive Transformations in Alloys” presented at the 1986 annual AIMS meeting in New Orleans, March 2–6, 1986. under the auspices of the ASM-MSD Structures Committee.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Oshima, R., Sugiyama, M. & Fujita, F.E. Tweed structures associated with Fcc-Fct transformations in Fe-Pd alloys. Metall Trans A 19, 803–810 (1988). https://doi.org/10.1007/BF02628361

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02628361

Keywords

Search

Navigation