Thermodynamic analysis on the phase separation of hcp phase in the mg-y-zn ternary system

Ryuichi Masumoto, Hiroshi Ohtani, Mitsuhiro Hasebe

研究成果: Article査読

18 被引用数 (Scopus)

抄録

A thermodynamic analysis of the Mg-Y-Zn ternary system has been carried out, mainly focusing on the phase separation of the Mg-based hcp phase. The thermodynamic properties such as the formation enthalpy for the metastable hcp phase were estimated by using a first-principles meth od, because the solubility of Y and Zn was very limited in the stable phase diagrams. The calculations showed that, at least in the ground state the solid solution of hep had a strong tendency to phase separate between the Mg-rich side and the Y-Zn binary side. The characteristic long period stacking ordered (LPSO) structures observed in some Mg alloys might originate in this thermodynamic properties of the hcp solid solution.

本文言語English
ページ(範囲)683-690
ページ数8
ジャーナルNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
73
9
DOI
出版ステータスPublished - 2009 9月
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学
  • 材料力学
  • 金属および合金
  • 材料化学

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