Universal power-law strengthening in metals?

P. M. Derlet, R. Maaß

Research output: Contribution to journalArticlepeer-review

Abstract

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
Volume109
DOIs
StatePublished - Dec 1 2015

Keywords

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

ASJC Scopus subject areas

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

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