VARIATION OF DISLOCATION DENSITY AND STORED ENERGY WITH GRAIN SIZE

Abstract

The stored energy of metals (due to the dislocation density resulting from deformation) in creases for a given strain as grain size de creases. This variation with grain size be comes less as the strain increases. This variation of dislocation density with grain size is explained in terms of the average distance the dislocations move during deformation. Dislocation densities, which are in good agreement with densities counted from electron transmission micrographs, are calculated on the basis of this interpretation. It is also found that the variation with strain of the average distance of dislocation motion is in agreement with the observed change in deformation cell size and strain.

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Document Details

Document Type
Technical Report
Publication Date
Mar 13, 1963
Accession Number
AD0404518

Entities

People

  • B. Christ
  • H. Conrad

Organizations

  • The Aerospace Corporation

Tags

DTIC Thesaurus Topics

  • Agreements
  • Air Force
  • California
  • Cell Size
  • Cell Structure
  • Cells
  • Contracts
  • Crystal Structure
  • Dislocations
  • Fine Grained Materials
  • Government Procurement
  • Grain Boundaries
  • Grain Size
  • Materials
  • Materials Science
  • Space Systems
  • United States

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Plasma Physics / Magnetohydrodynamics

Technology Areas

  • Microelectronics