Microstructure, mechanical properties and anysotropy of pure Ti processed by twist extrusion and cold rolling

D. V. Orlov, V. V. Stolyarov, H. Sh Salimgareyev, E. P. Soshnikova, A. V. Reshetov, Ya Ye Beygelziraer, S. G. Synkov, V. N. Varyukhin

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

9 Citations (Scopus)


It is investigated UFG structure formation in CP Ti bulks processed by SPD (cold Twist Extrusion (TE), true strain e∼5.1, with the following Cold Rolling (CR), true strain e∼0.7). Evolution of microstructure and tensile mechanical properties in the CP Ti were investigated under room temperature. After the TE, in transversal section it is formed structure fragments with size less 1 μm. Strength increased on 80 %; elongation was 3.4 %. Following low-temperature annealing (300°C, 1 hour) leaded to increasing in both strength and ductility properties. In longitudinal section, specimens' strength properties increased slightly. Elongation was about 6 %. The following low-temperature annealing practically did not influence on the strength but improved elongation to 7.2 %. The additional CR leaded to forming severe deformed structure. Average size of fragments was 50-500 nm. It was observed elimination of anisotropy and equalization of strength. In both directions ultimate tensile strength became about 780-800 MPa and ductility properties remained the same as in the original.

Original languageEnglish
Title of host publicationUltrafine Grained Materials III
EditorsY.T. Zhu, T.G. Langdon, R.Z. Valiev, S. Lee Semiatin
Number of pages6
Publication statusPublished - 2004
Externally publishedYes
EventUltrafine Grained Materials III - Charlotte, NC., United States
Duration: 14 Mar 200418 Mar 2004


ConferenceUltrafine Grained Materials III
Country/TerritoryUnited States
CityCharlotte, NC.


  • cold rolling
  • CpTi
  • SPD
  • twist extrusion
  • UFG structure

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