Coherency strain reduction in particles on a substrate as a driving force for solute segregation

Dor Amram, David Barlam, Eugen Rabkin, Roni Z. Shneck

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

It is well-established that solute segregation to interfaces is driven by the reduction of their energy. Here we propose coherency strain energy reduction due to lattice misfit modification at an interphase boundary, as a distinct driving force for segregation. Our experiments with Fe-Au particles on a sapphire substrate, together with finite element method calculations demonstrated that the elastic energy contribution to the total driving force for Au segregation exceeds its interfacial energy counterpart for particles larger than ∼ 10 nm in size.

Original languageEnglish
Pages (from-to)89-92
Number of pages4
JournalScripta Materialia
Volume122
DOIs
StatePublished - 1 Sep 2016

Keywords

  • Elastic energy
  • Finite element analysis
  • Interface segregation
  • Iron alloys
  • Segregation

ASJC Scopus subject areas

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

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