Skip to main content
SpringerLink
Log in

Study of microporosity formation in nickel-base superalloys

  • Published:
Metallurgical Transactions A Aims and scope Submit manuscript

Abstract

The susceptibility of nickel-base superalloys to microporosity formation is studied experimentally and theoretically. Analysis of a model introduced herein leads to formulation of a microporosity index, ΔP *, which is expressed in terms of solidification parameters and alloy system properties. This index can be determined from information obtained by quantitative differential thermal analysis. The effect of composition on the formation of microporosity is evaluated. Thus, aluminum, titanium, and cobalt are found to increase, and chromium to decrease microporosity. The effect of carbon is beneficial or detrimental depending on the aluminum content in the alloy.

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. Rupp, Y. Bienvenu, and J. Massol: Rapport final-actions concertées COST 50-III, Novembre 84, Ecole des Mines, Paris.

  2. J. Lecomte-Beckers:Metall. Trans. A, 1988, vol. 19A, pp.

  3. J. Lecomte-Beckers and M. Lamberigts:Proc. of High Temperature Alloys for Gas Turbine and Other Applications 1986, D. Reidel Publ. Co., Dordrecht, The Netherlands, 1986, vol. I, pp. 745–57.

    Google Scholar 

  4. H. Fredriksson and G. Rogberg:Metal Science, Dec. 1979, pp. 685–90.

  5. M.C. Flemings:Solidification Processing, Materials Science and Engineering Series, McGraw-Hill, New York, NY, 1974.

    Google Scholar 

  6. R. Mehrabian, M. Keane, and M. C. Flemings:Metall. Trans., 1970, vol. 1, p. 1209.

    CAS  Google Scholar 

  7. D. Apelian, M. C. Flemings, and R. Mehrabian:Metall. Trans., 1974, vol. 5, p. 2533.

    CAS  Google Scholar 

  8. H. Fredriksson and I. Svensson:Metall. Trans. B, 1976, vol. 7B, p. 599.

    CAS  Google Scholar 

  9. J. Campbell:The British Foundryman, April 1969, p. 147.

  10. T.Z. Kattamis and M.C. Flemings:Trans. TMS-A1ME, 1967, vol. 239, pp. 1504–11.

    CAS  Google Scholar 

  11. N. Streat and F. Weinberg:Metall. Trans. A, 1976, vol. 7A, pp. 417–23.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Matallurgy and Materials Science, University of Liège, Belgium

    J. Lecomte-Beckers (Senior Research Associate)

Authors
  1. J. Lecomte-Beckers
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Lecomte-Beckers, J. Study of microporosity formation in nickel-base superalloys. Metall Trans A 19, 2341–2348 (1988). https://doi.org/10.1007/BF02645058

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02645058

Keywords

Search

Navigation