Phase equilibria in the Cu-rich portion of the Cu-Al binary system

X. J. Liu, I. Ohnuma, R. Kainuma, K. Ishida

研究成果: Article査読

114 被引用数 (Scopus)


The phase equilibria in the Cu-Al binary system over the temperature range 500∼1000°C and the composition range 15∼60 at.% Al have been determined using diffusion couple technique, differential scanning calorimetry (DSC) and high temperature X-ray diffraction (XRD) methods. While the results from this study pertaining to the phase equilibria α/β and ∈1(∈2) liquid are in agreement with those reported in previous works, significant differences have been found between the earlier results and the present work in the composition range 25∼40 at.% Al. They are: (a) In the composition range 32∼38 at.% Al only a second order reaction, γ1 (D83)→γ0 (D82), is seen to occur and not a two-phase equilibrium γ01 reaction as reported before (b) The β0 phase is absent at high temperature near 1000°C and compositions near 30 at.% Al. (c) The equilibrium eutectoid γ0→β+γ1 and peritectoid γ0+∈1→γ1 reactions do not occur in this system.

ジャーナルJournal of Alloys and Compounds
出版ステータスPublished - 1998 1 9

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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