Mg Segregation at [Formula presented] Heterophase Interfaces on an Atomic Scale: Experiments and Computations

E. A. Marquis*, D. N. Seidman, M. Asta, C. Woodward, V. Ozoliņš

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Microscopic factors governing solute partitioning in ternary two-phase Al-Sc-Mg alloys are investigated combining three-dimensional-atom-probe (3DAP) miscroscopy measurements with first-principles computations. 3DAP is employed to measure composition profiles with subnanometer-scale resolution, leading to the identification of a large enhancement of Mg solute at the coherent [Formula presented] ([Formula presented]) heterophase interface. First-principles calculations establish an equilibrium driving force for this interfacial segregation reflecting the nature of the interatomic interactions.

Original languageEnglish (US)
JournalPhysical review letters
Volume91
Issue number3
DOIs
StatePublished - Jul 18 2003

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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