Skip to main content
SpringerLink
Log in

Effect of microstructure on environmental embrittlement in a TiAl base alloy

  • Published:
Metals and Materials Aims and scope Submit manuscript

Abstract

The effect of different microstructure on environmental embrittlement in a chromium-containing TiAl alloy has been analyzed. The alloys having fully lamellar, nearly lamellar and duplex structure exhibited no apparent difference in the fracture strength and the tensile elongation at two test environments, vacuum and air. The near gamma alloy shows more strength higher and ductility in the vacuum than in the air. Tensile ductility increased to 3.5% in the vacuum, compared with 0.3% in the air. It can be argued that the gamma phase itself has relatively high intrinsic ductility, although a relationship with the ductility of alpha-2 is not yet clarified. An important factor to determine the environmental effect is the morphology and the volume fraction of alpha-2 phase 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. Y. W. Kim,J. Met. 41, 24 (1989).

    CAS  Google Scholar 

  2. K. S. Chan and Y. W. Kim,Metall. Trans. 23A, 1663 (1992).

    CAS  Google Scholar 

  3. S. C. Huang and E. L. Hall,Metall. Trans. 22A, 427 (1991).

    CAS  Google Scholar 

  4. Y. W. Kim and D. M. Dimiduk,J. Met. 43, 40 (1991).

    CAS  Google Scholar 

  5. C. T. Liu and Y. W. Kim,Scripta metall. 27, 599 (1992).

    Article  CAS  Google Scholar 

  6. T. Takasugi and S. Hanada,J. Mater. Res. 7, 2739 (1992).

    Article  ADS  CAS  Google Scholar 

  7. M. H. Oh, H. Inui, M. Misaki and M. Yamaguchi,Acta metall. 41, 1939 (1993).

    Article  CAS  Google Scholar 

  8. M. Nakamura, K. Hashimoto and T. Tsukimoto,J. Mater. Res. 8, 68 (1993).

    Article  ADS  CAS  Google Scholar 

  9. K. S. Chan and Y. W. Kim,Metall. Trans. 24A, 113 (1993).

    CAS  Google Scholar 

  10. Y. W. Kim and D. M. Dimiduk,MRS Symp. Proc. 288, 671 (1993).

    CAS  Google Scholar 

  11. M. Nakamura, N. Itoh, K. Hashimoto, T. Tsujimoto and T. Suzuki,Metall. Trans. 25A, 321 (1994).

    CAS  Google Scholar 

  12. Y. W. Kim,Acta metall. 40, 1121 (1992).

    Article  CAS  Google Scholar 

  13. K. Hashimoto, M. Nobuki, H. Doi, M. Nakamura, T. Tsujimoto and T. Suzuki,Proc. JIMIS 6, 457 (1991).

    Google Scholar 

  14. M. H. Oh, H. Inui, M. Misaki, M. Kobayashi and M. Yamauchi,MRS Symp. Proc. 288, 1001 (1993).

    CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Materials Engineering, Korea Institute of Machinery and Materials, 66 Sangnam-dong, Changwon, 641-010, Kyungnam, Korea

    S. E. Kim & Y. T. Lee

Authors
  1. S. E. Kim
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Y. T. Lee
    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

Kim, S.E., Lee, Y.T. Effect of microstructure on environmental embrittlement in a TiAl base alloy. Metals and Materials 4, 47–51 (1998). https://doi.org/10.1007/BF03026064

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF03026064

Key words

Search

Navigation