Thermodynamic calculation of phase equilibria in the Be-Ti-V ternary system

Masatoshi Nishimura, Tatsuya Tokunaga, Hiroshi Ohtani, Mitsuhiro Hasebe

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Phase equilibria in the Be-Ti-V ternary system have been calculated using a thermodynamic description of the constituent binary systems. Energetic values obtained from first-principles calculations were utilized in our thermodynamic analysis to compensate for the lack of experimental data on the Be-V system. The thermodynamic treatment of the Be-Ti and Ti-V systems was based on previous assessments, and no additional ternary thermodynamic parameter was introduced. Our calculations show that a metastable two-phase separation of the bcc phase is present in the V-rich region of the Be-V binary system, and that this two-phase separation is stabilized in the Be-Ti-V ternary system. Furthermore, the metastable Be-Ti based binary B2 phase was also stable in the ternary system, and it participates in the phase equilibria over a wide composition range.

Original languageEnglish
Pages (from-to)122-125
Number of pages4
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume70
Issue number2
DOIs
Publication statusPublished - 2006 Feb
Externally publishedYes

Keywords

  • Beryllium-titanium-vanadium
  • Calculation of phase diagrams
  • First-principles calculations
  • Phase equilibria
  • Phase separation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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