Abstract
The isothermal sections of the Al–Cr–Ta ternary system at 1000 and 1200 °C have been determined by means of electron probe microanalysis and x-ray diffraction. The results show that eleven and nine three-phase regions are determined in the isothermal sections at 1000 °C and 1200 °C, respectively. No ternary compound exists at both two isothermal sections. The addition of Cr makes the Al69Ta39 phase be stable at 1000 °C. The Cr2Ta(HT) phase has a large composition range at both two isothermal sections. The experimental information obtained in the present work could be significant for alloy design and the complement of the thermodynamic database.
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References
J.R. Davis, ASM Specialty Handbook: Nickel, Cobalt, and Their Alloys, (2000)
D. Coutsouradis, A. Davin, and M. Lamberigts, D. Coutsouradis, A. Davin, and M. Lamberigts, Cobalt-Based Superalloys for Applications in Gas Turbines, Materials Science and Engineering, 1987, 88, p 11–19
J. Sato, T. Omori, K. Oikawa, I. Ohnuma, R. Kainuma, and K. Ishida, J. Sato, T. Omori, K. Oikawa, I. Ohnuma, R. Kainuma, and K. Ishida, Cobalt-Base High-Temperature Alloys, Science, 2006, 312(5770), p 90–91
C.T. Sims, N.S. Stoloff, W.C.J.M. Hagel, Superalloys II, (1987)
H. Yu, S. Ukai, S. Hayashi, and N. Oono, H. Yu, S. Ukai, S. Hayashi, and N. Oono, Effect of Al Content on the High-Temperature Oxidation of Co-20Cr-(5, 10)Al Oxide Dispersion Strengthened Superalloys, Corros. Sci., 2017, 118, p 49–59
K. Frisk, and A. MarkströM, K. Frisk, and A. MarkströM, Effect of Cr and V on Phase Equilibria in Co–WC Based Hardmetals, Int. J. Mater. Res., 2008, 99(3), p 287–293
Y. Chen, C. Wang, J. Ruan, T. Omori, R. Kainuma, K. Ishida, and X. Liu, Y. Chen, C. Wang, J. Ruan, T. Omori, R. Kainuma, K. Ishida, and X. Liu, High-Strength Co–Al–V-Base Superalloys Strengthened by γ′-Co3(Al, V) with High Solvus Temperature, Acta Mater., 2019, 170, p 62–74
L. Zheng, G. Zhang, T.L. Lee, M.J. Gorley, Y. Wang, C. Xiao, and Z. Li, L. Zheng, G. Zhang, T.L. Lee, M.J. Gorley, Y. Wang, C. Xiao, and Z. Li, The Effects of Ta on the Stress Rupture Properties and Microstructural Stability of a Novel Ni-Base Superalloy for Land-Based High Temperature Applications, Mater. Des., 2014, 61, p 61–69
F.L. Reyes Tirado, J. Perrin Toinin, D.C. Dunand, γ+γ′ Microstructures in the Co-Ta-V and Co-Nb-V Ternary Systems, Acta Materialia, 151, 137-148 (2018)
W.W. Xu, S.L. Shang, C.P. Wang, T.Q. Gang, Y.F. Huang, L.J. Chen, X.J. Liu, and Z.K. Liu, W.W. Xu, S.L. Shang, C.P. Wang, T.Q. Gang, Y.F. Huang, L.J. Chen, X.J. Liu, and Z.K. Liu, Accelerating Exploitation of Co-Al-Based Superalloys from Theoretical Study, Mater. Des., 2018, 142, p 139–148
A. Bauer, S. Neumeier, F. Pyczak, and M. Göken, A. Bauer, S. Neumeier, F. Pyczak, and M. Göken, Microstructure and Creep Strength of Different γ/γ′-Strengthened Co-Base Superalloy Variants, Scripta Mater., 2010, 63(12), p 1197–1200
S.M. Cardonne, P. Kumar, C.A. Michaluk, and H.D. Schwartz, S.M. Cardonne, P. Kumar, C.A. Michaluk, and H.D. Schwartz, Tantalum and Its Alloys, Int. J. Refract Metal Hard Mater., 1995, 13(4), p 187–194
Y. Liang, C. Guo, C. Li, and Z. Du, Y. Liang, C. Guo, C. Li, and Z. Du, Thermodynamic Modeling of the Al–Cr System, J. Alloy. Compd., 2008, 460(1), p 314–319
K. Mahdouk, and J.C. Gachon, K. Mahdouk, and J.C. Gachon, Thermodynamic Investigation of the Aluminum-Chromium System, Journal of Phase Equilibria, 2000, 21(2), p 157–166
V.T. Witusiewicz, A.A. Bondar, U. Hecht, J. Zollinger, V.M. Petyukh, O.S. Fomichov, V.M. Voblikov, and S. Rex, V.T. Witusiewicz, A.A. Bondar, U. Hecht, J. Zollinger, V.M. Petyukh, O.S. Fomichov, V.M. Voblikov, and S. Rex, Experimental study and Thermodynamic Re-Assessment of the Binary Al–Ta System, Intermetallics, 2010, 18(1), p 92–106
H. Okamoto, H. Okamoto, Al-Ta (Aluminum-Tantalum), Journal of Phase Equilibria, 2010, 31(6), p 578–579
Y. Du, and R. Schmid-Fetzer, Y. Du, and R. Schmid-Fetzer, Thermodynamic Modeling of the Al-Ta System, Journal of Phase Equilibria, 1996, 17(4), p 311–324
N. Dupin, and I. Ansara, N. Dupin, and I. Ansara, Thermodynamic Assessment of the Cr-Ta System, Journal of Phase Equilibria, 1993, 14(4), p 451–456
M. Venkatraman, and J.P. Neumann, M. Venkatraman, and J.P. Neumann, The Cr-Ta (Chromium-Tantalum) System, Bulletin of Alloy Phase Diagrams, 1987, 8(2), p 112–116
J. Pavlů, J. Vřešt’ál, M. Šob, Re-modeling of Laves Phases in the Cr–Nb and Cr–Ta Systems Using First-Principles Results, Calphad, 33(1), 179-186 (2009)
C.C. Zhao, S.Y. Yang, X.J. Liu, and C.P. Wang, C.C. Zhao, S.Y. Yang, X.J. Liu, and C.P. Wang, Experimental Determination of the Phase Equilibria in the Co–Cr–Ta Ternary System, J. Alloy. Compd., 2014, 608, p 118–125
C. Wang, Y. Liang, S. Yang, M. Yang, L. Li, J. Han, Y. Lu, X. Liu, Isothermal Sections of the Ni-Cr-Ta Ternary System at 1200 °C and 1300 °C, Metals, 9(7), (2019)
L. Machon, and G. Sauthoff, L. Machon, and G. Sauthoff, Deformation Behaviour of Al-Containing C14 Laves Phase Alloys, Intermetallics, 1996, 4, p 469–481
F. Stein, F. Stein, Consequences of Crystal Structure Differences between C14, C15, and C36 Laves Phase Polytypes for their Coexistence in Transition-Metal-Based Systems, Mater.Res. Soc., 2011, 1295, p 299–310
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Wang, C.P., Zheng, Z.C., Yang, S.Y. et al. Phase Equilibria of the Al–Cr–Ta Ternary System at 1000 and 1200 °C. J. Phase Equilib. Diffus. 42, 107–117 (2021). https://doi.org/10.1007/s11669-021-00862-4
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DOI: https://doi.org/10.1007/s11669-021-00862-4