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Phase stability among the α(A1), β(A2), and γ(D83) phases in the Cu-Al-X system

  • Basic And Applied Research
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Journal of Phase Equilibria

Abstract

The phase equilibria among the α(A1), β(A2), and γ(D83) phases in the Cu-Al-X systems (X: Ti, V, Mn, Fe, Co, Ni, Zn, Sn, and Sb) at 700 and 800 °C were investigated, and the effects of these alloying elements on the phase boundaries, homogeneous solid solution ranges, and tie-lines among the α, β, and γ phases were accurately determined by the diffusion couple method. The phase stabilities among α, β, and γ phases are discussed in terms of the partition coefficient. In addition, a modified Guillet’s method, which is used to estimate the effect of alloying elements on microstructure, is proposed by taking into account the change of equivalent coefficient with the phase fraction, and applied to predict the effect of alloying elements on the microstructure of the Cu-Al base alloy.

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Authors and Affiliations

  1. Department of Materials Science, Graduate School of Engineering, Tohoku University, 980-8579, Sendai, Japan

    X. J. Liu, C. P. Wang, I. Ohnuma, R. Kainuma & K. Ishida

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  1. X. J. Liu
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  2. C. P. Wang
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  3. I. Ohnuma
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  4. R. Kainuma
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  5. K. Ishida
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Liu, X.J., Wang, C.P., Ohnuma, I. et al. Phase stability among the α(A1), β(A2), and γ(D83) phases in the Cu-Al-X system. JPE 22, 431–438 (2001). https://doi.org/10.1361/105497101770332992

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  • DOI: https://doi.org/10.1361/105497101770332992

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