Plastic flow and grain refinement under simple shear-based severe plastic deformation processing

D. Orlov, Y. Todaka, M. Umemoto, Y. Beygelzimer, Zenji Horita, N. Tsuji

Research output: Contribution to journalConference article

11 Citations (Scopus)

Abstract

In the present work, effects of loading scheme and strain reversal on structure evolution are studied by using high pressure torsion (HPT) and twist extrusion (TE) techniques. High purity aluminum (99.99%) was processed at room temperature up to a total average equivalent strain of ∼4.8 by TE and HPT with two deformation modes: monotonic and reversal deformation with a step of 12° rotation. It was revealed that microstructural change with straining observed in pure Al was a common consequence of the SPD processing and was not affected significantly by the loading scheme. At the same time, it was found that strain reversal retarded grain refinement in comparison with monotonic deformation.

Original languageEnglish
Pages (from-to)171-178
Number of pages8
JournalMaterials Science Forum
Volume604-605
DOIs
Publication statusPublished - Apr 17 2009
EventInternational Conference Recent Developments in the Processing and Applications of Structural Metals and Alloys - Ancona, Italy
Duration: Jun 22 2008Jun 25 2008

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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