Dislocation structure and crystallite size distribution in plastically deformed Ti determined by X-ray peak profile analysis

J. Gubicza, I. C. Dragomir, G. Ribárik, S. C. Baik, Y. T. Zhu, R. Z. Valiev, Tamas Ungár

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Ultrafine-grained titanium produced by equal channel angular pressing and subsequent cold rolling is studied by X-ray diffraction. It is found that a texture exists in which the hexagonal basal planes are parallel to the longitudinal axis of the billet. The crystallite size distribution and the dislocation structure are determined by X-ray diffraction peak profile analysis. The median and the variance of the crystallite size distribution are obtained as m = 39 nm and σ = 0.14, respectively. The dislocation model of anisotropic broadening of peak profiles enables to determine the active slip systems. It was found that all three possible hexagonal Burgers vectors of dislocations exist, with the composition of 66% <a> type, 33% <c> type and 1% <c + a> type.

Original languageEnglish
Pages (from-to)1185-1188
Number of pages4
JournalZeitschrift fuer Metallkunde/Materials Research and Advanced Techniques
Volume94
Issue number11
DOIs
Publication statusPublished - Nov 2003

    Fingerprint

Keywords

  • Crystallite size distribution
  • Dislocation structure
  • Severe plastic deformation
  • Ti
  • X-ray peak profile analysis

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

Cite this