The Influence of the Velocity of a Peening Medium on the Almen Intensities and Residual Stress States of Shot Peened Specimens

  1. Prof. Dr.-Ing Lothar Wagner Chairman of ICSP8
  1. Wolfgang Zinn1,
  2. Jörgen Schulz2,
  3. Reiner Kopp2 and
  4. Berthold Scholtes1

Published Online: 7 FEB 2006

DOI: 10.1002/3527606580.ch21

Shot Peening

Shot Peening

How to Cite

Zinn, W., Schulz, J., Kopp, R. and Scholtes, B. (2003) The Influence of the Velocity of a Peening Medium on the Almen Intensities and Residual Stress States of Shot Peened Specimens, in Shot Peening (ed L. Wagner), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527606580.ch21

Editor Information

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

Author Information

  1. 1

    Institute of Materials Technology, University of Kassel, Kassel, Germany

  2. 2

    Institute of Metal Forming, Aachen University of Technology, Aachen, 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:

  • Almen intensities of shot peened specimens;
  • residual stress states of shot peened specimens;
  • influence of velocity;
  • surface layer properties

Summary

Up to now, the properties of shot peened components and the reproducibility of the peening process have been assessed by the aid of the Almen test. The bending height of the Almen strip is a measure of the peening intensity, taking all peening parameters into account in an integral way. The Almen test, however, can only be applied offline and it is not unambiguously correlated with the resulting properties like, e.g. residual stress. Therefore, a system for direct measurement of peening medium velocity was used to determine the correlation between peening parameters including the mean shot velocity and the Almen intensity. For that purpose, specimens, made of the German steel grade 42CrMo4 were shot peened under different conditions and velocity distributions as well as resulting residual stress distributions were analyzed.