X-Ray Diffraction Study of Changes in Stress/Strain Distributions during Fatigue of a Two-Phase Alloy.

Abstract

In annealed two-phase brass, push-pull fatigue at loads near the endurance limit produces residual stresses only in the softer majority alpha phase, not in Beta. These stresses are balanced between undeformed alpha-phase regions, and a small fraction of deformed alpha; the Beta phase is not involved in this balance. The uniform deformation produced by peening becomes inhomogeneous during fatigue, especially in the softer alpha-phase. This inhomogeneity of deformation is greater after fatigue of the peened specimens, then after fatigue of annealed material.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1985
Accession Number
ADA152367

Entities

People

  • I. C. Noyan
  • Jerome B. Cohen

Organizations

  • Northwestern University

Tags

DTIC Thesaurus Topics

  • Advanced Materials
  • Diffraction
  • Engineered Materials
  • Engineering
  • Fatigue Life
  • Intensity
  • Materials
  • Materials Engineering
  • Materials Science
  • Metamaterials
  • Residual Stress
  • Shot Peening
  • Surface Roughness
  • United States
  • Universities
  • X Rays
  • X-Ray Diffraction

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Structural Health Monitoring of Composite Structures.