Correlation between Mechanical and Geometrical Characteristics of Shot and Residual Stress Induced by Shot Peening

  1. Prof. Dr.-Ing Lothar Wagner Chairman of ICSP8
  1. Paolo Marconi1,
  2. Giorgio Citran2 and
  3. Giovanni Gregorat2

Published Online: 7 FEB 2006

DOI: 10.1002/3527606580.ch22

Shot Peening

Shot Peening

How to Cite

Marconi, P., Citran, G. and Gregorat, G. (2003) Correlation between Mechanical and Geometrical Characteristics of Shot and Residual Stress Induced by Shot Peening, in Shot Peening (ed L. Wagner), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527606580.ch22

Editor Information

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

Author Information

  1. 1

    2Effe Engineering S.r.l., Manerba del Garda, Italy

  2. 2

    Pometon S.p.A., Venice, Italy

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;
  • mechanical and geometrical characteristics of shot and residual stress;
  • X-ray diffraction

Summary

Accurate measurement of induced residual stress is necessary in order to evaluate the validity of peening process parameters. Among these parameters, a fundamental role is played by size and hardness of shot. Both of these characteristics are governed by specifications. Another important aspect is the use of “conditioned” shot.

The scope of our analysis is to verify if it is possible to achieve greater process repeatability and reliability by using shot with a narrower hardness range and with more precise geometrical characteristics, compared to values found in current specifications. We have therefore measured surface and in-depth residual stress by X-ray diffraction and have analyzed the shape of the shot with a scanning electron microscope (SEM). We have also evaluated the effect on both conditioned and non conditioned shot following impact on the peening surface by SEM analysis.