Strengthening mechanisms in nanostructured aluminum

X. Huang, N. Kamikawa, N. Hansen

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

Structural parameters that characterize deformation produced nanostructures are the structural morphology, boundary spacing, boundary misorientation and interior dislocation density. These parameters have been determined and related to the yield stress of nanostructured Al produced by accumulative roll bonding (ARB) based on mechanisms such as dislocation strengthening and grain boundary strengthening. It has been found that the calculated yield stress is significantly smaller than the experimental value. A supplementary strengthening mechanism has therefore been explored based on the observation of hardening by annealing and softening by slight deformation of ARB samples.

Original languageEnglish
Pages (from-to)102-104
Number of pages3
JournalMaterials Science and Engineering A
Volume483-484
Issue number1-2 C
DOIs
Publication statusPublished - 2008 Jun 15

Keywords

  • Hardening
  • Mechanical properties
  • Nanostructure
  • Softening
  • Structural parameters

ASJC Scopus subject areas

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

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