The solidification of Al–Ti–Pd alloys is studied by light optical and scanning electron microcopy, electron microprobe analysis, X-ray diffraction, and differential thermal analysis in the composition range 0–50 at.% Pd in the Al–AlPd–TiPd–Ti partial system. The liquidus surface projection, melting diagram, and Scheil diagram are constructed for the first time. Eleven regions of primary solidification of ternary compounds, solid solutions based on binary phases, and Ti and Al components are found to exist. The τ3 phase melts congruently while τ1 is formed incongruently.
Eleven four-phase invariant equilibria involving a liquid phase exist in the system: two of them are congruent and nine incongruent. The invariant four-phase reactions occur in the temperature range between 630 and 1425–1456°C.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Notes
A solid solution based on a compound or component is in brackets.
The composition is in at.% here and below.
References
O. V. Zaikina, V. G. Khoruzha, K. E. Korninko, and T. Ya. Velikanova, “Solidus surface of the Al–Ti–Pd system in the Al–AlPd–TiPd–Ti region,” Powder Metall. Met. Ceram., 50, No. 7–8, 416–428 (2011).
J. J. Ding, P. Rogl, B. Chevalier, and J. Etourneau, “Structural intermetallics and phase relations in the systems Ti–(Pd, Pd)–Al,” Intermetallics, 8, No. 12, 1377–1384 (2000).
A. Grytsiv, P. Rogl, H. Schmidt, et al., “Formation and crystal chemistry of cubic ternary phases with filled Th6Mn23-type and AuCu3-type in the systems Ti–MVIII–Al,” Intermetallics, 12, No. 5, 563–577 (2004).
X. Yan, A. Grytsiv, P. Rogl, et al., “Laves phases in the ternary systems Ti–{Pd, Pd}–Al,” Intermetallics, 17, No. 5, 336–342 (2009).
A. J. McAlister, “The Al–Pd (aluminum–palladium) system,” Bull. Alloys Phase Diagrams, 7, No. 4, 368– 374 (1986).
M. Yurechko, A. Fattah, T. Velikanova, and B. Grushko, “A contribution to the Al–Pd phase diagram,” J. Alloys Compd., 329, No. 1–2, 173–181 (2001).
V. N. Eremenko and T. D. Shtepa, “Phase diagram of the system titanium–palladium,” Powder Metall. Met. Ceram., 11, No. 3, 228–233 (1972).
V. T. Witusiewicz, A. A. Bondar, U. Hecht, et al., “The Al–B–Nb–Ti system. III. Thermodynamic reevaluation of the constituent binary system Al–Ti,” J. Alloys Compd., 465, No. 1–2, 64–77 (2008).
S. Balanetskyy, T. Ya. Velikanova, and B. Grushko, “An investigation of the Al–Pd–Fe phase diagram between 50 and 100% (at.) Al: reaction scheme,” J. Alloys Compd., 394, 219–225 (2005).
S. Balanetskyy, G. Meisterernst, M. Heggen, and M. Feuerbacher, “Reinvestigation of the Al–Mn–Pd alloy system in the vicinity of the T- and R-phases,” Intermetallics, 16, 71–87 (2008).
Acknowlegements
The authors are grateful to P. S. Martsenyuk and L. A. Duma (Frantsevich Institute), as well as B. Grushko (Jülich, Germany) for technical assistance during experiments.
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated from Poroshkovaya Metallurgiya, Vol. 51, No. 7–8 (486), pp. 110–123, 2012.
Rights and permissions
About this article
Cite this article
Zaikina, O.V., Khoruzha, V.G., Kornienko, K.E. et al. Liquidus surface and melting diagram of the Al–Ti–Pd system in the Al–AlPd–TiPd–Ti region. Powder Metall Met Ceram 51, 463–473 (2012). https://doi.org/10.1007/s11106-012-9456-8
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11106-012-9456-8