Solute-atom segregation at high-angle (002) twist boundaries in dilute Au-Pt alloys

D. Udler, D. N. Seidman

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Solute-atom segregation is studied by Monte Carlo simulations for three high-angle symmetrical (002) twist boundaries in Au-1 at. % Pt and Pt-1 at. % Au alloys at T = 850 K. It complements our previous study, that focused mainly on low-angle boundaries in the same alloys. Solute enhancement occurs on the Pt-rich side of the phase diagram, while on the Au-rich side net depletion in solute is observed. Following the trend observed for low-angle boundaries, Au as a solute prefers the structural units of the perfect crystal type, while Pt as a solute is depleted at those sites. The solute concentration at structural units depends on the planar fraction of those units in the boundary.

Original languageEnglish (US)
Pages (from-to)1933-1941
Number of pages9
JournalJournal of Materials Research
Volume10
Issue number8
DOIs
StatePublished - Aug 1995

ASJC Scopus subject areas

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

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