Residual stress relief in the aluminium alloy 7075

J. S. Robinson, C. E. Truman, T. Pirling, T. Pirling

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The residual stresses in heat treated 7075 aluminium alloy blocks have been characterised using two neutron diffraction strain scanning instruments. The influence of uniaxial cold compression (1-10%) on relieving the residual stress has been determined. Increasing the magnitude of cold compression from 1 to 10% has been shown to have a beneficial effect on the residual stress distribution by reducing the range between the maximum and minimum residual stresses. The effect of over aging 7075 on residual stress has also been characterised using neutron diffraction and this was found to reduce the residual stress by 25-40%.

Original languageEnglish
Title of host publicationMechanical Stress Evaluation by Neutrons and Synchrotron Radiation VIII - 8th MECA SENS
EditorsThomas Holden, Tamas Ungar, Thomas Buslaps, Thilo Pirling
PublisherTrans Tech Publications Ltd
Pages31-39
Number of pages9
ISBN (Print)9783038356356
DOIs
Publication statusPublished - 2017
Event8th International Conference on Mechanical Stress Evaluation by Neutrons and Synchrotron Radiation, MECA SENS 2015 - Grenoble, France
Duration: 28 Sep 20152 Oct 2015

Publication series

NameMaterials Science Forum
Volume905 MSF
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference8th International Conference on Mechanical Stress Evaluation by Neutrons and Synchrotron Radiation, MECA SENS 2015
Country/TerritoryFrance
CityGrenoble
Period28/09/152/10/15

Keywords

  • Aluminium alloy 7075
  • Heat treatment
  • Peak broadening
  • Residual stress
  • Thermal stress relief

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