Obtaining nanostructured titanium by twist extrusion

V. Varyukhin, Y. Beygelzimer, R. Kulagin, A. Reshetov

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


The results of twist extrusion studying for Ti and its alloys are presented. By means of optical microscopy showed that the cross section of samples, as a rule, has a characteristic macrostructure with the structural elements, elongated in the direction of vortex centered on the axis of extrusion. In the longitudinal section of samples macrostructure resembles turbulent flow of liquid. The microstructure after multiple twist extrusion characterized by submicron dimensions and large-angle boundaries. Specified structure ensures the billets, treated by twist extrusion, a high strength and ductility. Despite the strain heterogeneity in one pass, multipass twist extrusion leads to a homogeneous structure and properties on the cross section of a sample. This is conditioned by mixing of a metal during twist extrusion, the structure stabilization and saturation of mechanical properties under simple shear.

Original languageEnglish
Title of host publicationTi 2011 - Proceedings of the 12th World Conference on Titanium
Place of PublicationBeijing
Number of pages4
Publication statusPublished - 2012
Externally publishedYes
Event12th World Conference on Titanium, Ti 2011 - Beijing, China
Duration: 19 Jun 201124 Jun 2011


Conference12th World Conference on Titanium, Ti 2011


  • severe plastic deformation
  • twist extrusion
  • ultrafine grained materials


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