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Constitution of alloys and phase diagram of the Al–Ti–Rh system. III. Solidus surface of the Ti–TiRh–AlRh–Al partial system

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The data obtained by metallography, x-ray diffraction, electron microprobe and differential thermal analyses as well as by Pirani–Alterthum incipient melting technique are used to construct the solidus surface projection of the Ti–TiRh–AlRh–Al partial system onto the composition triangle for the first time. The participation of two ternary compounds (τ1, Al67Ti27Rh6, with AuCu3-type structure, and τ2, Al49.6Ti27.1Rh23.3, with Th6Mn23+1-type structure) in phase equilibria is confirmed. Thirteen single-phase surfaces corresponding to solid solutions based on components and to the phases based on binary and ternary compounds are found on the solidus surface. This surface also contains 25 ruled surfaces bounding two-phase volumes as well as 13 isothermal planes that are constituents of invariant four-phase equilibria.

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Acknowledgements

The authors are grateful to P. S. Martsenyuk for participation in DTA and thank L. A. Duma for participation in x-ray analyses.

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Authors and Affiliations

  1. Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Kiev, Ukraine

    K. E. Kornienko, V. G. Khoruzha & V. M. Vereshchaka

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  1. K. E. Kornienko
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  2. V. G. Khoruzha
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  3. V. M. Vereshchaka
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Correspondence to K. E. Kornienko.

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Translated from Poroshkovaya Metallurgiya, Vol. 50, No. 9–10 (481), pp. 85–101, 2011.

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Kornienko, K.E., Khoruzha, V.G. & Vereshchaka, V.M. Constitution of alloys and phase diagram of the Al–Ti–Rh system. III. Solidus surface of the Ti–TiRh–AlRh–Al partial system. Powder Metall Met Ceram 50, 641–654 (2012). https://doi.org/10.1007/s11106-012-9370-0

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  • DOI: https://doi.org/10.1007/s11106-012-9370-0

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