Metals and Materials International

, Volume 24, Issue 4, pp 802–814 | Cite as

Microstructure, Texture and Mechanical Properties of Titanium Grade 2 Processed by ECAP (Route C)

  • 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 \(\varPhi\) = 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.


Metals Severe plastic deformation Electron backscattering diffraction Microstructure Texture 



We thank the Polish National Centre of Science (NCN) for supporting the present work by grant: DEC-2015/19/D/ST8/00818. Also AGH statutory funding No. is acknowledged. R. Z. Valiev appreciates the RZV Grant No 14.B25.31.0017 from the Russian Federal Ministry for Education and Science.


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Copyright information

© The Korean Institute of Metals and Materials 2018

Authors and Affiliations

  • M. Wroński
    • 1
  • K. Wierzbanowski
    • 1
  • D. Wojtas
    • 1
  • E. Szyfner
    • 1
  • R. Z. Valiev
    • 2
    • 3
  • J. Kawałko
    • 4
  • K. Berent
    • 4
  • K. Sztwiertnia
    • 5
  1. 1.AGH University of Science and Technology, Faculty of Physics and Applied Computer ScienceKrakówPoland
  2. 2.Institute of Physics of Advanced MaterialsUfa State Aviation Technical UniversityUfaRussian Federation
  3. 3.Laboratory for Mechanics of Bulk NanomaterialsSaint Petersburg State UniversitySaint PetersburgRussia
  4. 4.AGH University of Science and Technology, Academic Centre for Materials and NanotechnologyKrakówPoland
  5. 5.Institute of Metallurgy and Materials Science, Polish Academy of SciencesKrakówPoland

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