Universal power-law strengthening in metals?

P. M. Derlet, R. Maaß

Research output: Contribution to journalArticlepeer-review


The strength of most metals scales with either an internal or external length scale. Motivated by the wide applicability of this phenomenon to material type and microstructure, we develop a model which gives quantitative insight into the scaling exponent using the known universal properties of a dislocation network and the leading order stress dependence of an underlying critical stress distribution. The approach is found to be equally valid for both Hall-Petch strengthening and the smaller-is-stronger paradigm of small scale plasticity.

Original languageEnglish (US)
Article number10721
Pages (from-to)19-22
Number of pages4
JournalScripta Materialia
StatePublished - Dec 1 2015


  • Intermittent flow
  • Modelling
  • Plasticity
  • Sample size effects
  • Strength

ASJC Scopus subject areas

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


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