Skip to main content
SpringerLink
Log in

The composition of precipitated austenite in 5.5ni steel

  • Published:
Metallurgical Transactions A Aims and scope Submit manuscript

Abstract

Both scanning transmission electron microscopic (STEM) and chemical extraction techniques were used to analyze the chemical content of precipitated austenite in 5.5Ni steel as a function of heat treatment. Austenite was introduced into the steel by tempering at 600 °C for 2 h (QT2) or 100 h (QT100), by tempering for 1 h at 670 °C (QL), or by double tempering 1 h at 670 °C + 1 h at 600 °C (QLT). The two methods of chemical analysis employed for the analysis of this austenite differ quantitatively in the measured austenite composition but are in qualitative agreement; they show an austenite enrichment in Ni, Cr, Mn, and Mo which is most pronounced (and nearly equivalent) for the QT100 and QLT treatments. The similar enrichment of the QT100 and QLT material is interpreted in light of the sequence of reactions leading to the QLT structure. A good correlation is found between the apparent solute enrichment of the precipitated austenite and its thermal stability on cooling to 77 K.

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. S. Jin, S. K. Hwang, and J. W. Morris, Jr.:Metall. Trans. A, 1975, vol. 6A, pp. 1569–75.

    CAS  Google Scholar 

  2. S. Jin, S. K. Hwang, and J. W. Morris, Jr.:Metall. Trans. A, 1975, vol. 6A, pp. 1721–26.

    CAS  Google Scholar 

  3. C. K. Syn, S. Jin, and J. W. Morris, Jr.:Metall. Trans. A, 1976, vol. 7A, pp. 1827–32.

    CAS  Google Scholar 

  4. S. Nagashima, T. Ooka, S. Sekino, H. Mimura, T. Fujishima, S. Yano, and H. Skurai:Tetsu to Hagane, 1972, vol. 58, pp. 128–41.

    CAS  Google Scholar 

  5. J. W. Morris, Jr., J. I. Kim, and C. K. Syn:Advances in Metals Processing, R. Mehrabian and V. Weiss, eds., p. 173, Plenum Press, 1981.

  6. J. I. Kim and J. W. Morris, Jr.:Metall. Trans. A, 1980, vol. 11 A, pp. 1401–1406.

    Google Scholar 

  7. C. W. Marshall, R. H. Heheman, and A. R. Troiano:Trans ASM, 1962, vol. 55, p. 135.

    Google Scholar 

  8. J. W. Morris, Jr., C. K. Syn, J. I. Kim, and B. Fultz:Proceedings of International Conference on Martensitic Transformations, p. 572, MIT, Cambridge, 1979.

    Google Scholar 

  9. S. Yano, H. Sakurai, H. Mimura, N. Wakita, T. Ozawa, and K. Aoki:Trans. Iron Steel Inst. Jpn., 1973, vol. 13, pp. 133–40.

    CAS  Google Scholar 

  10. H. Haga:Trans. Iron Steel Inst. Jpn., 1973, vol. 13, pp. 141–44.

    CAS  Google Scholar 

  11. K. Segawa, S. Nagashima, S. Sekino, and H. Shimada:Tetsu to Hagane, 1963, vol. 49, pp. 40–46.

    Google Scholar 

  12. R. L. Miller:Trans. ASM, 1964, vol. 57, pp. 892–99.

    CAS  Google Scholar 

  13. B. Fultz: M.S. Thesis, University of California, Berkeley, 1978.

  14. A. Hendriks:EDAX EDITor, 1975, vol. 5, no. 3, p. 13.

    Google Scholar 

  15. T. P. Hoar and K. W. J. Bowen:Trans ASM, 1952, vol. 45, pp. 443–74.

    Google Scholar 

  16. E. A. Balakir, Yu P. Zotov, E. B. Malysheva, and V. I. Panchisbny:Diffusion and Defect Data, F. H. Wohlbier, ed., vol. 11, p. 60, 1975.

Download references

Author information

Authors and Affiliations

  1. Department of Materials Science & Mineral Engineering, University of California, 94720, Berkeley, CA

    J. I. Kim (Assistant Research Engineer)

  2. Department of Materials Science & Mineral Engineering, University of California, 94720, Berkeley, CA

    J. W. Morris (Professor)

Authors
  1. J. I. Kim
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. J. W. Morris
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Faculty Senior Scientist, Molecular & Materials Research Division, Lawrence Berkeley Laboratory, Berkeley, CA 94720.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Kim, J.I., Morris, J.W. The composition of precipitated austenite in 5.5ni steel. Metall Trans A 12, 1957–1963 (1981). https://doi.org/10.1007/BF02643809

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02643809

Keywords

Search

Navigation