Skip to main content
Springer Nature Link
Log in

Thermomechanical processing of hydro-turbine steels

  • Published:
Journal of Materials for Energy Systems

Abstract

An overview of the fabrication methods for the production of large hydraulic turbines is presented and the “fabricateweld” method for the production of large Francisturbine runners has been examined in detail. Tests for impact energy, fatigue and fracture toughness have been carried out in order to evaluate the cracking susceptibility. The assembled runner when stress relieved remains prone to brittle fracture. A ustenitizing has produced significant increases in fracture toughness and critical crack size compared with those obtained with stress relief treatment. The reliability and availability of the machine may be improved without sacrificing efficiency by subjecting the assembled runner to an austentizing treatment followed by furnace cooling.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Subscribe and save

Springer+ Basic
$34.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or eBook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

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

Explore related subjects

Discover the latest articles and news from researchers in related subjects, suggested using machine learning.

References

  1. F. deSiervo and F. deLeva:International Water Power and Dam Construction, August 1976, pp. 28–35.

  2. Plane Strain Fracture Toughness of Metallic Materials, ASTM E 399-78a, ASTM, Philadelphia, 1979.

  3. Methods for Crack Opening Displacement (COD) Testing BS 5762, British Standards Institute, London, 1979.

  4. G. A. Clarke and J. D. Landes:J. Test. Eval., 1979, vol. 7, no. 5, pp. 264–69.

    Article  Google Scholar 

  5. J. R. Rice:Fracture, volume II, H. Liebowitz, ed., p. 191, Academic Press, New York, 1968.

    Google Scholar 

  6. C. A. Griffis:J. of Pressure Vessel Technology, Trans. ASME, November 1975, pp. 278–83.

  7. A. Akhtar and N. W. Brodie:International Water Power and Dam Construction, September 1979, pp. 40–46.

  8. Guidance on Some Methods for Derivation of Acceptance Levels for Defects in Fusion Welded Joints, PD6493, British Standards Institute, London, 1980.

  9. Welding in the World, 1975, vol. 13, no. 1/2, pp. 29–48.

Download references

Author information

Authors and Affiliations

  1. Research and Development, B.C. Hydro and Power Authority, 12388 88th Ave., V3W 7R7, Surrey, B.C., Canada

    A. Akhtar & N. W. Brodie

Authors
  1. A. Akhtar
    View author publications

    Search author on:PubMed Google Scholar

  2. N. W. Brodie
    View author publications

    Search author on:PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Akhtar, A., Brodie, N.W. Thermomechanical processing of hydro-turbine steels. JMES 2, 25–32 (1980). https://doi.org/10.1007/BF02833435

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02833435

Keywords