Crystal size effect in two dimensions - Influence of size and shape

R. Maaß, C. A. Volkert, P. M. Derlet

Research output: Contribution to journalArticlepeer-review

Abstract

Based on the statistics of both the stress and strain of a plastic event, the well known size-effect in strength can be linked to a crystal's critical stress distribution and the universal scaling exponent of intermittent plasticity. We successfully test these hypotheses with small-scale deformation experiments as a function of diameter and aspect ratio, and find that the latter affects the material's strength in a way that gives direct insight into the underlying critical stress distribution of the deforming volume.

Original languageEnglish (US)
Pages (from-to)27-30
Number of pages4
JournalScripta Materialia
Volume102
DOIs
StatePublished - Jun 1 2015
Externally publishedYes

Keywords

  • Plasticity
  • Single crystals
  • Size effect
  • Stress scaling

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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