Skip to main content
SpringerLink
Log in

Reduced Dwell-Fatigue Resistance in a Ni-Base Superalloy After Short-Term Thermal Exposure

  • Communication
  • Published:
Metallurgical and Materials Transactions A Aims and scope Submit manuscript

Abstract

The effect of short-term thermal exposure on microstructure and dwell-fatigue resistance of Ni-base superalloy 718Plus was investigated. Contrary to previous studies performed after long-term exposure, an increase in the dwell-fatigue crack growth rate was observed, which was connected to a small increase in the size of the hardening precipitates. The proposed controlling mechanism was the stress relaxation rate at the crack tip, and based on this a schematic model for the development of the properties during exposure is presented.

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

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7

Similar content being viewed by others

References

  1. A. Pineau and S.D. Antolovich: Eng. Failure Analysis, 2009, vol. 16, pp. 2668-97.

    Article  Google Scholar 

  2. D.A. Woodford: Energy Mater., 2006, vol. 1, pp. 59-79.

    Article  Google Scholar 

  3. M. Hörnqvist, L. Viskari, K. Stiller and G. Sjöberg: 7th International Symposium on Superalloy 718 and Derivatives, TMS, Pittsburgh, PA, 2010, pp. 705-17.

    Google Scholar 

  4. R.M. Kearsey, J. Tsang, S. Oppenheimer and E. McDevitt: JOM, 2012, vol. 64, pp. 241-251.

    Article  Google Scholar 

  5. X. Liu, J. Xu, E. Barbero, W.D. Cao and R.L. Kennedy: Mater. Sci. Eng. A, 2008, vol. 474, pp. 30-38.

    Article  Google Scholar 

  6. W.D. Cao, in: 11th International Symposium on Superalloys, TMS, Champion, PA, 2008, pp. 789–97.

    Google Scholar 

  7. A. Deschamps and F. De Geuser: J. Applied Cryst., 2010, vol. 44, pp. 343-352.

    Article  Google Scholar 

  8. R.M. Kearsey, J. Tsang, S. Oppenheimer and E. McDevitt: 12th International Symposium Superalloys, TMS, Champion, PA, 2012, pp. 741-749.

    Google Scholar 

  9. E.J. Pickering, H. Mathur, A. Bhowmik, O.M.D.M. Messé, J.S. Barnard, M.C. Hardy, R. Krakow, K. Loehnert, H.J. Stone and C.M.F. Rae: Acta Mater., 2012, vol. 60, pp. 2757-2769.

    Article  Google Scholar 

  10. P.J. Ennis, A. Strang, S.P. Gill, G.M. McColvin and H.V. Atkinson: Energy Mater., 2012, vol. 4, pp. 184-188.

    Article  Google Scholar 

  11. M.C. Chaturvedi and Y. Han: Mater. Sci. Eng., 1987, vol. 89, pp. L7-L10.

    Article  Google Scholar 

Download references

The mechanical data used in this study were produced in the EU FP7 Project VITAL. The access to MAX lI I911-4 beamline was provided through Grant 20120098. Dr. Sylvio Haas, MAX-Lab, is kindly acknowledged for the assistance during the SAXS experiments. The Swedish Board for Strategic Research (SSF) is thanked for the financial support (Grant SM11-0008), which allowed this study to be performed.

Author information

Author notes

  1. Leif Viskari (Former Doctoral Student, Development Engineer)

    Present address: AB SKF, Gothenburg, Sweden

Authors and Affiliations

  1. Department of Applied Physics, Chalmers University of Technology, Gothenburg, Sweden

    Magnus Hörnqvist (Research Associate) & Leif Viskari (Former Doctoral Student, Development Engineer)

  2. R&T Centre, GKN Aerospace Engine Systems, Trollhättan, Sweden

    Magnus Hörnqvist (Research Associate)

Authors
  1. Magnus Hörnqvist
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Leif Viskari
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Magnus Hörnqvist.

Additional information

Manuscript submitted December 18, 2013.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Hörnqvist, M., Viskari, L. Reduced Dwell-Fatigue Resistance in a Ni-Base Superalloy After Short-Term Thermal Exposure. Metall Mater Trans A 45, 2699–2703 (2014). https://doi.org/10.1007/s11661-014-2291-4

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11661-014-2291-4

Keywords

Search

Navigation