Skip to main content
Log in

High-temperature crystallization behaviour of amorphous Fe80B20

  • Papers
  • Published:
Journal of Materials Science Aims and scope Submit manuscript

Abstract

Samples of 0.003 in. round Fe80B20 amorphous wires were annealed in vacuo for 1 sec to 8 h periods at 780° C and the crystallinity induced in these wires from this heat treatment was studied through X-ray diffraction and field-ion microscopy. X-ray diffraction studies indicate that complete crystallinity is produced following 1 sec anneal at 780° C. However, the initial product is a primitive-tetragonal Fe3B phase unlike the body-centred tetragonal Fe3B observed in low-temperature isothermal transformation studies with this alloy. The Fe3B phase is seen to persist in the diffraction patterns for annealing durations of up to 15 min. Upon annealing for periods of up to 1 h, an intermediate three-phase structure consisting of α-Fe, Fe3B, and Fe2B is seen to result with a gradual decrease in the Fe3B phase corresponding to longer annealing durations. Anneals of more than 1 h at 780° C are seen to result in the disappearance of the Fe3B phase producing a two-phase microstructure consisting of α-Fe(b c c) and Fe2B (b c t). Field-ion-microscopy with a pure neon imaging gas at 78 K likewise indicates that existence of a three-stage phase structural change during the isothermal anneals, and the atomic arrangement of the various species are quite readily discernible because of the different symmetries contained in the three distinct phases.

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

Access this article

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. A. Davis, R. Ray, C. P. Chou and R. C. O'Handly, Scripta Met. 10 (1976) 541.

    Google Scholar 

  2. J. L. Walter, J. F. Bartram, and R. R. Russell, Met. Trans. A 9A (1978) 803.

    Google Scholar 

  3. H. Chang and S. Sastri, ibid 8A (1977) 1063.

    Google Scholar 

  4. J. L. Walter, J. F. Bartram and I. Mellas, Mat. Sci. Eng. 36 (1978) 193.

    Google Scholar 

  5. E. Vafaci-Makhsoos, E. L. Thomas and L. E. Toth, Met. Trans. A 9A (1978) 1449.

    Google Scholar 

  6. J. L. Walter, P. Rao, E. F. Koch and J. F. Bartram, ibid 8A (1977) 1141.

    Google Scholar 

  7. M. Von Heimendahl and G. Maussner, J. Mater. Sci. 14 (1979) 1238.

    Google Scholar 

  8. M. Stubičar, E. Babi, D. Subasič, D. Pavuna and Ž. Marohnič, Phys. Stat. Sol. (a) 44 (1977) 339.

    Google Scholar 

  9. R. E. Maringer and C. E. Mobley, J. Vac. Sci. Technol. 11 (1977) 1067.

    Google Scholar 

  10. O. T. Inal and L. E. Murr, J. Appl. Phys. 49 (1978) 2427.

    Google Scholar 

  11. F. M. Norman, Henry and Kathleen Loudsdale, “International Tables for X-ray Crystallography” Vol. 1 (Kynoch Press, Birmingham, 1952).

    Google Scholar 

  12. S. Rundqvist, Acta Chem. Scand. 16 (1962) 1.

    Google Scholar 

  13. E. W. Muller and T. T. Tsong, “Field Ion Microscopy, Principles and Applications”, (American Elsevier, New York, 1969) p. 206.

    Google Scholar 

  14. H. T. Evans, D. E. Appleman and D. S. Handwerker. Annual Meeting of the American Crystallography Association, Cambridge, Mass, 28 March 1963 (American Crystallography Association, Cambridge, Mass., 1963) p. 42.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Inal, O.T., Keller, L. & Yost, F.G. High-temperature crystallization behaviour of amorphous Fe80B20 . J Mater Sci 15, 1947–1961 (1980). https://doi.org/10.1007/BF00550620

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00550620

Keywords

Navigation