Six alloys (25 wt% Cr, 0.4 C, 1.6 Ti, Co and Ni (bal.)) were prepared by casting for evaluating their oxidation and creep properties at 1200°C. Their microstructures consist of a dendritic matrix with eutectic carbides in the interdendritic spaces. Carbides are TiC for the alloys richer in Co than in Ni, and chromium carbides in the alloys richer in Ni than in Co. Differential thermal analysis shows that all alloys start melting above 1250°C. The oxidation tests in air at 1200°C allow observing a chromia–forming behavior of the alloys rich in nickel better than the cobalt alloys. In contrast, the creep resistance tests at 1200°C demonstrate an undeniable superiority of the alloys rich in cobalt. Good compromise for both types of high temperature behavior appears to be obtained by a Co-base alloy containing nickel as minor element but with significant proportion in nickel (15–30 wt% Ni).
Similar content being viewed by others
References
D. J. Young, High Temperature Oxidation and Corrosion of Metals, Amsterdam: Elsevier Corrosion Series (2008).
S. R. Shatynski, “The thermochemistry of transition metal carbides,” Oxidation of Metals, 13, Is. 2, 105–118 (1979); https://doi.org/10.1007/BF00611975.
M. J. Donachie, and S. J. Donachie, Superalloys, A Technical Guide, Materials Park: ASM International (2002).
Q. Yang, W. Xiong, G. Zhang, and Y. Huang, “Effect of Ti(C, N) on microstructure, mechanical properties and oxidation resistance of Ni-based superalloys,” Rare Metal Mater. and Eng., 41, Is. 12, 2127–2130 (2012).
P. A. Kuroda, B. L. Pedroso, F. M. Pontes, and C. R. Grandini, “Effect of Titanium Addition on the Structure, Microstructure, and Selected Mechanical Properties of As-Cast Zr-25Ta-xTi Alloys,” Metals, 11, Is. 10, art. no. 1507 (2021); https://doi.org/10.3390/met11101507.
Y. Zhu, C. Li, Y. Liu, Z. Ma, and H. Yu, “Effect of Ti addition on high-temperature oxidation behavior of Co–Ni-based superalloy,” J. of Iron and Steel Research Int., 27, Is. 10, 1179–1189 (2020); https://doi.org/10.1007/s42243-020-00379-z.
M. A. Azim, B. Gorr, H.-J. Christ, O. Lenchuk, K. Albe, D. Schliephake, and M. Heilmaier, “Effect of Ti content and nitrogen on the high-temperature oxidation behavior of (Mo, Ti)5Si3,” Intermetallics, 90,103–112 (2017); https://doi.org/10.1016/j.intermet.2017.05.023.
M. Khair, and P. Berthod, “As-cast microstructures and hardness of chromium-rich cobalt-based alloys reinforced by titanium carbides,” Mater. Sci. Ind. J., 14, Is. 13, 102–109 (2016).
P. Berthod, and M. Khair, “Thermodynamic and experimental study of cobalt-based alloys designed to contain TiC carbides,” Calphad: Computer Coupling of Phase Diagrams and Thermochemistry, 65, 34–41 (2019); https://doi.org/10.1016/j.calphad.2019.02.009.
E. F Bradley, Superalloys: A Technical Guide, Metals Park: ASM International (1988).
C. T. Sims, and W. C. Hagel, The Superalloys, New York: Wiley (1972).
Acknowledgments
The authors wish to thank L. Aranda for his help for the creep tests.
Author information
Authors and Affiliations
Corresponding author
Additional information
Published in Fizyko-Khimichna Mekhanika Materialiv, Vol. 58, No. 5, pp. 48–54, September–October, 2022.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Ozouaki, S., Berthod, P. Behaviors of (Ti, C)-Containing Cast (Co, Ni)-Based Superalloys in Oxidation and Creep at 1200°C. Mater Sci 58, 609–615 (2023). https://doi.org/10.1007/s11003-023-00706-1
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11003-023-00706-1