A series of physicochemical analysis techniques are employed to study the phase equilibria in the aluminum corner of the Al–Ti–Pt system at subsolidus temperatures and in the alloy crystallization process. It has been established for the first time that a ternary τ1 phase (AuCu3 structural type) forms by peritectic reaction L + <Ti2Al5> + <TiAl> ⇄ τ1 at 1405°C. On the solidus surface in the studied composition range at 1405, 1310, 1275, 1060, 925, 820, and 660°C, there are seven isothermal planes that participate in invariant four-phase equilibria involving the liquid phase, three of them being peritectic and the others transitional.
Similar content being viewed by others
References
J. J. Ding, P. Rogl, B. Chevalier, and J. Etourneau, “Structural chemistry and phase relations in the systems Ti–{Pd, Pt}–Al,” Intermetallics, 8, No. 12, 1377–1384 (2000).
X. Yan, A. Grytsiv, P. Rogl, et al., “Laves phases in the ternary systems Ti–{Pd, Pt}–Al,” Intermetallics, 17, No. 5, 336–342 (2009).
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).
O. V. Zaikina, V. G. Khorujaya, D. Pavlyuchkov, et al., “Investigation of the Al–Ti–Pt alloy system at 1100°C,” J. Alloys Compd., 509, No. 28, 7565–7571 (2011).
O. Zaikina, D. Pavlyuchkov, V. Khorujaya, and T. Velikanova, “X-ray powder diffraction data for new ternary phases in the Al–Ti–Pt system,” Powder Diffr., 23, No. 4, 360–362 (2008).
S. Samuha, D. Pavlyuchkov, O. V. Zaikina, et al., “Crystal structures of the Al–Ti–Pt τ5 and τ6 phases solved by zonal precession electron diffraction,” J. Alloys Compd., 621, 47–52 (2015).
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, Nos. 1–2, 64–77 (2008).
A. J. McAlister and D. J. Kahan, “The Al–Pt (aluminum–platinum) system,” Bull. Alloy Phase Diagrams, 7, No. 1, 47–51 (1986).
B. Grushko, D. Kapush, J. Su, et al., “Al-rich region of Al–Pt,” J. Alloys Compd., 580, No. 15, 618–625 (2013).
P. Villars and L. D. Calvert, Pearson’s Handbook of Crystallographic Data for Intermetallic Phases, in 3 vols., ASM, Metals Park, Ohio (1985), p. 5366.
S. Stilz and A. Prince, “Al–Be–Ti,” in: G. Petzow and G. Effenberg (eds.), Ternary Alloys, VCH (1990), Vol. 3, p. 374.
J. Braun, M. Ellner, and B. Predel, “Experimental studies on the structure and stability of the TiAl phase,” Z. Metallkd., 86, No. 12, 870–876 (1995).
J. Braun and M. Ellner, “Phase equilibria investigations on the aluminum-rich part of the binary system Ti–Al,” Met. Mater. Trans., 32A, No. 5, 1037–1048 (2001).
J. C. Schuster and H. Ipser, “Phases and phase equilibria in the partial system TiAl3–TiAl,” Z. Metallkd., 81, No. 6, 383–386 (1990).
M. Woerle, F. Krumeich, T. Chatterji, et al., “On the structure and twinning of PtAl4,” J. Alloys Compd., 455, Nos. 1–2, 130–136 (2008).
M. Ellner, U. Kattner, and B. Predel, “Studies on the constitution and structure in the aluminum-rich part of the Ni–Al and Pt–Al systems,” J. Less-Common Met., 87, No. 2, 305–325 (1982).
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated from Poroshkova Metallurgiya, Vol. 57, Nos. 1–2 (519), pp. 144–158, 2018.
Rights and permissions
About this article
Cite this article
Zaikina, O.V., Khoruzha, V.G., Kornienko, K.E. et al. Phase Equilibria in the Aluminum Corner of the Al–Ti–Pt System. Powder Metall Met Ceram 57, 114–126 (2018). https://doi.org/10.1007/s11106-018-9959-z
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11106-018-9959-z