Finite element analysis of plastic deformation in twist extrusion

M. I. Latypov, I. V. Alexandrov, Y. E. Beygelzimer, S. Lee, H. S. Kim

Research output: Contribution to journalArticlepeer-review

62 Scopus citations

Abstract

Twist extrusion (TE), a promising severe plastic deformation (SPD) technique for grain refinement down to ultrafine/nanocrystalline microstructures, was introduced as an attempt to provide large plastic deformation conditions similar to those in high pressure torsion while allowing large workpiece dimensions for industrial applications. As a relatively new SPD technique, TE requires in-depth investigation of its plastic deformation characteristics. The present study investigates the influence of process parameters such as backward pressure and friction on the loading history, the stress/strain states, and the final shape of processed workpieces using the finite element method. The results provide a basis for reasonable decision of processing conditions and also identify prerequisites for studies in formability and fracture of metals subjected to TE.

Original languageEnglish (US)
Pages (from-to)194-200
Number of pages7
JournalComputational Materials Science
Volume60
DOIs
StatePublished - Jul 2012
Externally publishedYes

Keywords

  • Backward pressure
  • Finite element method
  • Severe plastic deformation
  • Simple shear
  • Twist extrusion

ASJC Scopus subject areas

  • Computer Science(all)
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Computational Mathematics

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