Precipitate strengthening of non-spherical precipitates extended in 〈100〉 or {100} direction in fcc crystals

M. R. Ahmadi*, B. Sonderegger, E. Povoden-Karadeniz, A. Falahati, E. Kozeschnik

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

In precipitation strengthening of non-spherical precipitates, the effective radius is depending on the relative orientation between particle and the direction of dislocation movement. Expressions for the equivalent precipitate radius applicable to particle shearing and non-shearing mechanism are derived for ellipsoidal particles taking into account their growth direction and the dislocation character (edge and screw). The results are compared to spherical particles and presented in the form of closed analytical correction factors.

Original languageEnglish
Pages (from-to)262-266
Number of pages5
JournalMaterials Science and Engineering / A
Volume590
DOIs
Publication statusPublished - 10 Jan 2014

Keywords

  • Ellipsoidal precipitates
  • Modeling
  • Precipitate strengthening

ASJC Scopus subject areas

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

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