Abstract
The influence of aluminide coatings on high-temperature α + β VT-41 alloy and a VIT1 alloy based on the Ti2NbAl orthophase on the isothermal heat resistance at 700°C is studied during oxidation in still air. NiCrAlY and Al(Si) coatings are found to substantially increase the heat resistance of the alloys at 700°C. The phase composition of the aluminosilicide layer (TiAl3 + TiSi2 + Ti5Si3) under the NiCrAlY coating significantly retards the titanium diffusion to the NiCrAlY layer and can be used as a diffusion barrier and a aluminum source for the NiCrAlY layer during high-temperature oxidation.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
A. Il’in, B. A. Kolachev, and I. S. Pol’kin, Titanium Alloys. Composition, Structure, and Properties: A Handbook (Moscow, VILS–MATI, 2009).
N. A. Nochovnaya, V. I. Ivanov, E. B. Alekseev, and A. S. Kochetkov, “Ways of optimizing the service properties of titanium-based intermetallic alloys,” Aviats. Mater. Tekhn., No. S, 196–206 (2012).
J. Shen and X. Wan, “Corrosion, oxidation and surface modification of titanium alloys,” in Ti–2007. Science and Technology (China, 2007), pp. 2041–2049.
O. N. Grebenyuk and M. V. Zenina, “Oxidation of a Ti2NbAl-based intermetallic alloy at temperatures up to 800°C,” Tekhn. Legk. Splavov, No. 4, 36–40 (2010).
M. Smyslov, A. A. Bybin, and S. S. Dautov, “Effect of the methods of protecting the surface of a Ti–Al intermetallic alloy on its corrosion resistance at high temperatures,” Upr. Tekhn. Pokryt., No. 4, 29–34 (2016).
F. Appe and M. Oehring, Gamma Titanium Aluminide Alloys. Science and Technology (Wiley, New York, 2011).
J. Shi, H. Q. Li, M. Q. Wan, H. L. Wang, and X. Wang, “High temperature oxidation and inter-diffusion behavior of electroplated Ni–Re diffusion barriers between NiCo–CrAlY coating ant orthorhombic-Ti2Alnb alloy,” Corrosion Science 102, 200–208 (2016).
Y. Wang, J. Xiong, J. Yan, H. Fan, and J. Wang, “Oxidation resistance and corrosion behavior of hot-dip aluminized coatings on commercial-purity titanium,” Surf. Coat. Techn. 206, 1277–1282 (2011).
J. Cizek, O. Man, P. Roupcova, K. Loke, and I. Dlourhy, “Oxidation performance of cold spray Ti–Al barrier coated γ-TiAl intermetallic substrates,” Surf. Coat. Techn. 268, 85–89 (2015).
S. A. Muboyadzhyan, A. N. Lutsenko, D. A. Aleksandrov, and D. S. Gorlov, “Possibility of increasing the service characteristics of GTE compressor blades by ion surface modification,” Trudy VIAM, 99–110 (2014).
M. Smyslov, A. A. Bybin, and S. S. Dautov, “Effect of the colorizing of the surface of a TNM-B1 intermetallic alloy on its resistance to high-temperature oxidation and gas corrosion,” Vestn. Mashinostr, No. 5, 68–71 (2016).
H. R. Jafarian, S. Mirzamohammdi, and A. Sabour, “Investigation on microstructure and oxidation behavior of Cr-modified aluminide coating on γ-TiAl alloys,” Physicochem. Mechanics of Materials, No. 4, 47–51 (2011).
M. P. Brady, J. L. Smialek, and W. J. Brindley, “A twophase (TiAl + TiCrAl) coating alloys for titanium aluminides,” US Patent 5837387 (1998).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © N.V. Abraimov, A.Yu. Ivanova, 2018, published in Elektrometallurgiya, 2018, No. 2, pp. 23–31.
Rights and permissions
About this article
Cite this article
Abraimov, N.V., Ivanova, A.Y. Effect of Coatings on the Heat Resistance of VT-41 and VIT1 Alloys during Isothermal Oxidation. Russ. Metall. 2018, 565–572 (2018). https://doi.org/10.1134/S0036029518060022
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0036029518060022