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Residual stresses in forged IN718 turbine discs

  • Ulrike Cihak EMAIL logo , Peter Staron , Wilfried Marketz , Harald Leitner , Johann Tockner and Helmut Clemens
Published/Copyright: February 8, 2022
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 95 Issue 7

Abstract

Residual stresses play an important role in the production of forged components like turbine discs. Variations in the processing parameters can lead to different residual stress states, which complicate subsequent processing steps, e. g. turning to the final shape. Therefore, a deeper understanding of the residual stress evolution during thermo-mechanical processing and the resulting distortions during machining is essential in order to optimize the manufacturing process with respect to cost efficiency and quality of the product. Consequently, the development of residual stresses in a forged turbine disc made of nickel-based superalloy IN718 was simulated using a finite element (FE) model. The experimental verification of the model was done by independently performed neutron strain scanning. For the studied forged and subsequently water-quenched disc the obtained residual stresses agree well with the stresses predicted by the used FE.

Keywords: Neutron strain scanning; Residual stress; Nickel-based superalloys; Modelling

Dedicated to Professor Dr. Dr. h. c. Franz Jeglitsch on the occasion of his 70th birthday

Dipl.-Ing. Ulrike Cihak Department für Metallkunde und Werkstoffprüfung Montanuniversiät Leoben Franz-Josef Straße 18, A-8700 Leoben, Austria Tel.: +43 3842 402 4205 Fax: +43 3842 402 4202

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Received: 2004-03-02
Accepted: 2004-04-07
Published Online: 2022-02-08

© 2004 Carl Hanser Verlag, München

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  2. Editorial
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https://doi.org/10.1515/ijmr-2004-0124
Keywords for this article
Neutron strain scanning; Residual stress; Nickel-based superalloys; Modelling

Articles in the same Issue

  1. Frontmatter
  2. Editorial
  3. 50 Jahre Metallkunde-Kolloquium am Arlberg
  4. Articles Basic
  5. Microstructure and mechanical properties of Si and YN doped powder metallurgical tantalum
  6. Mechanical model for the deformation of the wood cell wall
  7. Physical metallurgy of high Nb-containing TiAl alloys
  8. Phase and microstructure selection in peritectic alloys under high G-V ratio
  9. Austenitic stainless steels of high strength and ductility
  10. Articles Applied
  11. Charakterisierung von Dual-Phasen- und TRIP-Stählen mittels Nanohärte und Röntgendiffraktometrie
  12. Mechanische Zuverlässigkeit von keramischen Kaltleiterbauelementen – Möglichkeiten zur Verbesserung
  13. Physical and materials aspects of photonic crystals for microwaves and millimetre waves
  14. In-situ investigation of strain relaxation in an Al/Si–MMC using high energy synchrotron radiation
  15. Sigma-phase in duplex-stainless steels
  16. Evolution of texture in Alloy 80A during initial ingot breakdown
  17. Characterisation of precipitates in a stainless maraging steel by three-dimensional atom probe and small-angle neutron scattering
  18. Modifikation von Titanlegierungen für medizinische Anwendungen
  19. Residual stresses in forged IN718 turbine discs
  20. Notifications/Mitteilungen
  21. Personal/Personelles
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