Influence of Shot Peening and Deep Rolling on High Temperature Fatigue of the Ni-Superalloy Udimet 720 LI

  1. Prof. Dr.-Ing Lothar Wagner Chairman of ICSP8
  1. Janny Lindemann1,
  2. Kim Grossmann2,
  3. Thomas Raczek1 and
  4. Prof. Dr.-Ing Lothar Wagner Chairman of ICSP81,3

Published Online: 7 FEB 2006

DOI: 10.1002/3527606580.ch58

Shot Peening

Shot Peening

How to Cite

Lindemann, J., Grossmann, K., Raczek, T. and Wagner, L. (2003) Influence of Shot Peening and Deep Rolling on High Temperature Fatigue of the Ni-Superalloy Udimet 720 LI, in Shot Peening (ed L. Wagner), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527606580.ch58

Editor Information

  1. TU Clausthal, Institut für Werkstoffkunde und Werkstofftechnik, Agricolastr. 6, D-38678 Clausthal-Zellerfeld, Germany

Author Information

  1. 1

    Chair of Physical Metallurgy and Materials Technology, Technical University of Brandenburg at Cottbus, Cottbus, Germany

  2. 2

    Rolls-Royce Deutschland, Dahlewitz, Germany

  3. 3

    TU Clausthal, Institut für Werkstoffkunde und Werkstofftechnik, Agricolastr. 6, D-38678 Clausthal-Zellerfeld, Germany

Publication History

  1. Published Online: 7 FEB 2006
  2. Published Print: 12 MAY 2003

ISBN Information

Print ISBN: 9783527305377

Online ISBN: 9783527606580

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Keywords:

  • shot peening;
  • deep rolling;
  • high temperature fatigue of the Ni-superalloy Udimet 720 LI

Summary

The Ni-superalloy Udimet 720 LI is typically used for application as turbine disc material for gas turbines. The present investigation was undertaken to determine if the elevated temperature fatigue strength can be improved by mechanical surface treatments. Shot peening and deep rolling were performed on circumferentially notched (kt = 2.3 and 3.5) specimens. Axial fatigue tests were performed at T = 650 °C using a stress ratio of R = 0.1. The fatigue performance will be compared with electrolytically polished references.