Determination of the residual stress field around scratches using synchrotron X-rays and nanoindentation

M. K. Khan, M. E. Fitzpatrick, S. V. Hainsworth, A. D. Evans, L. Edwards

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Abstract

The residual strain field around scratches of 125 μm depth and 5 μm root radius have been measured using synchrotron X-ray diffraction. Scratches were produced using different tools in fine-grained aluminium alloy AA 5091. Residual stresses up to +1700 με were measured at the scratch tip, depending on the tool used to make the scratch. The load-displacement curves obtained from nanoindentation were used to determine the residual stresses around the scratches. It was found that the load-displacement curves are sensitive to any local residual stress field present and behave according to the type of residual stresses. This combination of nanoindentation and synchrotron X-rays has been proved highly effective for the study of small-scale residual stresses around features such as scratches.

Original languageEnglish
Title of host publicationMechanical Stress Evaluation by Neutrons and Synchrotron Radiation
Pages25-30
Number of pages6
DOIs
Publication statusPublished - 16 Aug 2010
Externally publishedYes
Event5th International Conference on Mechanical Stress Evaluation by Neutrons and Synchrotron Radiation, MECA SENS V/3rd International Symposium of Quantum Beam Science Directorate of Japan Atomic Energy Agency, QuBS2009 - Mito, Japan
Duration: 10 Nov 200912 Nov 2009

Publication series

NameMaterials Science Forum
Volume652
ISSN (Print)0255-5476

Conference

Conference5th International Conference on Mechanical Stress Evaluation by Neutrons and Synchrotron Radiation, MECA SENS V/3rd International Symposium of Quantum Beam Science Directorate of Japan Atomic Energy Agency, QuBS2009
CountryJapan
CityMito
Period10/11/0912/11/09

Keywords

  • Nanoindentation
  • Residual stress
  • Scratches
  • Synchrotron X-rays

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

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