Tests on the Source of 'Anomalous' Residual Stresses Obtained by X-Ray Diffraction Techniques.

Abstract

The magnitude and origin of residual stresses after uniaxial plastic deformation in Armco iron and 1010 steel have been studied by X-ray diffraction techniques. It was found that both pseudo-macrostresses and microstresses exist. A qualitative theory, due to Weidemann et al for the oscillations in d vs sin squared psi caused by microstresses (and that lead to anomalous values of residual stress) has been placed on a quantitative basis and tested. A procedure has been developed for obtaining the true macrostress in the presence of such oscillations. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 30, 1971
Accession Number
AD0741711

Entities

People

  • Jerome B. Cohen
  • Robert H. Marion

Organizations

  • Northwestern University

Tags

DTIC Thesaurus Topics

  • Diffraction
  • Oscillation
  • Plastic Deformation
  • Residual Stress
  • Residuals
  • Stresses
  • X Rays
  • X-Ray Diffraction

Readers

  • Materials Science and Engineering.
  • Mechanical Engineering/Mechanics of Materials.