The Effect of Cold Deformation and Surface Treatment on Fatigue Behaviour of Al2O3-Al6061 Composite Material

  1. Prof. Dr.-Ing Lothar Wagner Chairman of ICSP8
  1. Gaofeng Quan and
  2. Wolfgang Brocks

Published Online: 7 FEB 2006

DOI: 10.1002/3527606580.ch52

Shot Peening

Shot Peening

How to Cite

Quan, G. and Brocks, W. (2003) The Effect of Cold Deformation and Surface Treatment on Fatigue Behaviour of Al2O3-Al6061 Composite Material, in Shot Peening (ed L. Wagner), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527606580.ch52

Editor Information

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

Author Information

  1. Institute for Materials Research, GKSS Research Center, Geesthacht, Germany

Publication History

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

ISBN Information

Print ISBN: 9783527305377

Online ISBN: 9783527606580

SEARCH

Keywords:

  • Al2O3-Al6061 composite material;
  • cold deformation;
  • surface treatment;
  • fatigue behavior

Summary

An investigation of rotating beam fatigue was carried out on alumina particulate reinforced aluminum alloy 6061 after bulk cold and hot work and surface treatment. It is found that the cold work (swaging) decreases both the low-cycle-fatigue (LCF) life and fatigue limit at 107 cycles. Shot peening improves the fatigue performance quite a lot, regarding both LCF life and fatigue limit for both undeformed and deformed material. The observation of crack paths illustrates that the cracks tend to direct to the micro crevices through the matrix. Both post-heat treatment and mechanical surface treatment can cure some defects and in turn improve the fatigue behaviour. It is found from macro and micro hardness measurements that the improvement in fatigue behavior is induced more or less by work hardening of surface microstructure.