Skip to main content
SpringerLink
Log in

Effects of Cr and Nb on the high temperature oxidation of TiAl

  • Published:
Metals and Materials International Aims and scope Submit manuscript

Abstract

From isothermal and cyclic oxidation tests on thermomechanically treated Ti-51%Al, Ti-47%Al-4%Cr, and Ti-48%Al-2%Cr-2%Nb alloys at 800, 900, 1000°C in air, it was found that Ti-48%Al-2%Cr-2%Nb and Ti-47%Al-4%Cr had the best and the worst oxidation resistance, respectively. The oxide scales consisted primarily of TiO2 and Al2O3, with and without a small amount of dissolved Cr and Nb ions, depending on the alloy composition. These ions were slightly enriched inside the inner oxide layer, and strongly enriched around the scale-matrix interface. The outer TiO2-rich layer was formed by the outward diffusion of Ti ions, while the inner (TiO2+Al2O3) mixed layer was formed by the inward transport of oxygen. The outward movement of Al ions formed the intermediated Al2O3-rich layer, above the prepared alloys.

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. Y. W. Kim,JOM 41, July, 24 (1989).

    CAS  Google Scholar 

  2. Y. W. Kim,JOM 46, July, 30 (1994).

    CAS  Google Scholar 

  3. Y. W. Kim and F. H. Froes,High Temperature Aluminides and Intermetallics (eds., S. H. Whang, C. T. Liu, D. P. Pope and J. O. Stiegler), p. 465, TMS, Warrendale, PA (1990).

    Google Scholar 

  4. M. Nakamura, M. Nobuki, T. Tanabe, T. Kumagai, I. Mutoh and E. Abe,Intermetallics 6, 637 (1998).

    Article  CAS  Google Scholar 

  5. T. Kumagai and M. Nakamura,Scripta mater. 34, 1147 (1996).

    Article  CAS  Google Scholar 

  6. I. C. I. Okafor and R. G. Reddy,JOM 51, June, 35 (1999).

    Article  CAS  Google Scholar 

  7. H. G. Jung, C. H. Oh and K. Y. Kim,J. Kor. Inst. Met. & Mater. 38, 1053 (2000).

    CAS  Google Scholar 

  8. J. H. Won, Y. J. Kim, S. W. An and D. B. Lee,J. Kor. Inst. Met. & Mater. 36, 546 (1996).

    Google Scholar 

  9. V. A. C. Haanappel, J. D. sunderkotter and M. F. Stroosnijder,Intermetallics 7, 529 (1999).

    Article  CAS  Google Scholar 

  10. G. Welsch and A. I. Kahveci,Oxidation of High Temperature Intermetallics (eds., T. Grobstein, and J. Doychak), p. 207, TMS, Warrendale, PA (1989).

    Google Scholar 

  11. M. P. Brady, W. J. Brindley, J. L. Smialek and I. E. Locci,JOM 48, Nov., 46 (1996).

    CAS  Google Scholar 

  12. S. A. Kekare, D. K. Shelton and P. B. Asawath,Structural Intermetallics (eds., R. Darolia, J. J. Lewandowski, C. T. Liu, P. L. Martin, D. B. Mirade and M. V. Nathal), p. 325, TMS, Warrendale, PA (1993).

    Google Scholar 

  13. D. B. Lee, Y. C. Lee, Y. J. Kim and S. W. Park,Oxid. Met. 54, 575 (2000).

    Article  CAS  Google Scholar 

  14. S. Becker, A. Rahmel, M. Schorr and M. Schütze,Oxid. Met. 38, 425 (1992).

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Center for Advanced Plasma Surface Technology, Sungkyunkwan University, 300 Cheoncheon-dong, Jangan-gu, 440-746, Suwon, Korea

    D. B. Lee & K. B. Park

  2. National Institute for Materials Science, Tsukuba-shi, 305, Ibaraki, Japan

    M. Nakamura

Authors
  1. D. B. Lee
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. K. B. Park
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. M. Nakamura
    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

Lee, D.B., Park, K.B. & Nakamura, M. Effects of Cr and Nb on the high temperature oxidation of TiAl. Met. Mater. Int. 8, 319–326 (2002). https://doi.org/10.1007/BF03186102

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF03186102

Keywords

Search

Navigation