• M. Wroński
  • K. Wierzbanowski
  • D. Wojtas
  • E. Szyfner
  • R. Z. Valiev
  • J. Kawałko
  • K. Berent
  • K. Sztwiertnia

In the present work the properties of titanium grade 2 after ECAP processing with original route and regimes (route C, channel angle (Formula presented.) = 120°, deformation temperature 300 °C, number of passes up to 8) were examined. Texture development and microstructure parameters after ECAP processing and after recrystallization were determined using electron back scatter diffraction and analysed. A significant increase of the mechanical strength accompanied by some increase of ductility was observed in the deformed samples. The kernel average misorientation and average grain orientation spread were strongly increased after deformation, which confirms the material refinement and fragmentation. The proportion of low angle boundaries increased after four ECAP passes, but after four consecutive passes high angle grain boundaries became predominant. No deformation twins were observed after four and eight ECAP passes. The material recrystallized after deformation retained a fine grain microstructure. The textures of deformed and recrystallized samples were determined. It was found that texture after 8 passes is more homogeneous that that after 4 passes, which partly explains higher ductility of this first sample.

Original languageEnglish
Pages (from-to)802-814
Number of pages13
JournalMetals and Materials International
Volume24
Issue number4
DOIs
StatePublished - Jul 2018

    Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

    Research areas

  • Electron backscattering diffraction, Metals, Microstructure, Severe plastic deformation, Texture, CHANNEL ANGULAR EXTRUSION, ROOM-TEMPERATURE, COPPER, CRYSTALLOGRAPHIC TEXTURE, MAGNESIUM, EVOLUTION, RECRYSTALLIZATION, SEVERE PLASTIC-DEFORMATION, INTERSTITIAL-FREE STEEL, GRAIN

ID: 35161606