Skip to main content
SpringerLink
Log in

Oxygen induced chemical ordering and ultrafine lamellar structure formation in a Ti-48 at. Al alloy

  • Published:
MRS Online Proceedings Library Aims and scope

Abstract

Influence of oxygen on the microstructure development of a Ti-48 at. Al alloy has been investigated by means of transmission electron microscopy and 1D atom probe. Oxygen is found to significantly increase the temperature of the α → α2 chemical ordering reaction. As a consequence, above a critical oxygen content, the α → α2 transformation is substituted to the α → γm massive transformation when the Ti-48 Al alloy is quenched from the single a-phase field. In such a case, our pervious work has shown that the alloy exhibits a fully (α2 + γ) ultrafine lamellar structure. The present work gives a complete description of the ultrafine lamellar structure formation which, in opposition to the classical lamellar structure formation, involves an intragranular nucleation and growth of the γ phase within the α2 matrix.

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. Kawabata, T., Tadano, T. and Izumi, O., Scripta metall. 22, 1725 (1988).

    Article  CAS  Google Scholar 

  2. Huang, S.C. and Siemers, P.A., Met. Trans. A 20A, 1899 (1989).

    Article  CAS  Google Scholar 

  3. Vasudevan, V.K., Stucke, M.A., Court, S.A. and Fraser, H.L., Phil. Mag. Lett. 59, 299 (1989).

    Article  CAS  Google Scholar 

  4. Kad, B.K. and Fraser, H.L., Phil. Mag. Lett. 70, 211 (1994).

    Article  CAS  Google Scholar 

  5. Menand, A., Huguet, A. and Nérac-Partaic, A., Acta mater. 44, 4729 (1996).

    Article  CAS  Google Scholar 

  6. Takagi, S. and Ouchi, C., Mater. Trans. JIM, 38, 285 (1997).

    Article  CAS  Google Scholar 

  7. Perdrix, F., Trichet, M.-F., Bonnentien, J.-L., Cornet, M. and Bigot, J., Euromat, Edited by D.G. Morris, S. Naka, and P. Caron, 289 (1999).

  8. Lefebvre, W., Loiseau, A., Thomas, M. and Menand, A., Phil. Mag. A 82, 2341–2355 (2002).

  9. J.M. Sarrau, F. Danoix, B. Deconihout, B., M. Bouet, A. Menand and D. Blavette, App. Surf. Sci. 76/77, 367–373 (1993).

  10. McCullough, C., Valencia, J.J., Levi, C.G. and Mehrabian, R., Acta Met. 37, 1321 (1989).

    Article  CAS  Google Scholar 

  11. D. Veeraraghavan, P. Wang and V.K. Vasudevan, Acta mater. 47, 3313–3330 (1999).

  12. Denquin, A. and Naka, S., Acta metall. 44, 343 (1996).

    CAS  Google Scholar 

  13. Singh, S.R. and Howe, J.M.,Phil. Mag. A 66, 739 (1992).

    Article  CAS  Google Scholar 

  14. Qin, G.W., Hao, S. and Sun, X., Scripta metall. 39, 289 (1998).

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Groupe de Physique des Materiaux, UMR CNRS 6634, Institut des Matériaux de Rouen, UFR, Sciences et Techniques, Technopôle du Madrillet, 76801, Saint Etienne du Rouvray, France

    Williams Lefebvre & Alain Menand

  2. Laboratoire d’Etude des Microstructures, UMR CNRS-ONERA ONERA BP 72, 29 av. de la Division Leclerc, 92322, Châtillon, France

    Annick Loiseau

Authors
  1. Williams Lefebvre
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Annick Loiseau
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Alain Menand
    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

Lefebvre, W., Loiseau, A. & Menand, A. Oxygen induced chemical ordering and ultrafine lamellar structure formation in a Ti-48 at. Al alloy. MRS Online Proceedings Library 753, 36 (2002). https://doi.org/10.1557/PROC-753-BB3.6

Download citation

  • Published:

  • DOI: https://doi.org/10.1557/PROC-753-BB3.6

Search

Navigation