The density and the character of dislocations in cubic and hexagonal polycrystals determined by X-ray diffraction

J. Gubicza, G. Ribárik, G. R. Goren-Muginstein, A. R. Rosen, T. Ungár

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

The density and the character of dislocation in cubic and hexagonal polycrystals were determined by a new procedure of X-ray diffraction profile analysis. The anisotropic strain broadening of diffraction profiles was accounted for by dislocation contrast factors. The screw or edge character of dislocations in a severely deformed copper specimen was determined by analysing the dislocation contrast factors. Comparing the contrast effect of the possible dislocation slip systems in hexagonal crystals with that determined experimentally for a sintered tungsten carbide sample, it was found that the dominant slip system in this specimen <112̄0> {0001}. The dislocation density was calculated for both samples by the modified Warren-Averbach procedure.

Original languageEnglish
Pages (from-to)60-63
Number of pages4
JournalMaterials Science and Engineering A
Volume309-310
DOIs
Publication statusPublished - Jul 15 2001

Keywords

  • Dislocation character
  • Dislocation density
  • X-ray diffraction profile analysis

ASJC Scopus subject areas

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

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