Geometrically necessary dislocation and size-dependent plasticity

Huajian Gao*, Yonggang Huang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

294 Scopus citations


The geometrically necessary dislocation (GND) and size-dependent plasticity in metals were discussed. The role of GND in the development of continuum plasticity theories with an intrinsic material length scale was presented. It was found that the metallic materials displayed significant size effects when the charcteristic length scale of non-uniform plastic deformation was close to a micron.

Original languageEnglish (US)
Pages (from-to)113-118
Number of pages6
JournalScripta Materialia
Issue number2
StatePublished - Jan 1 2003


  • Geometrically necessary dislocations
  • Metals
  • Plasticity
  • Strain gradient plasticity

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Metals and Alloys

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