Experimental evidence for grain-boundary sliding in ultrafine-grained aluminum processed by severe plastic deformation

Nguyen Q. Chinh, Péter Szommer, Zenji Horita, Terence G. Langdon

Research output: Contribution to journalReview article

139 Citations (Scopus)


Grain-boundary sliding in ultrafine-grained aluminum to examine material processing by severe plastic deformation (SPD), was described. It was proposed that sliding occurred in these materials by the movement of extrinsic dislocations along the boundary. The observations suggested that new deformation processes become important not only in materials having grain-sizes but also in materials having sub-micrometer grain sizes. The results show that grain-boundary sliding is a viable deformation process in ultrafine-grained metals processed by SPDoccurrenceoccurence of sliding provides an explanation for the reasonable ductility.

Original languageEnglish
Pages (from-to)34-39
Number of pages6
JournalAdvanced Materials
Issue number1
Publication statusPublished - Jan 5 2006


All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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