Fabrication of Multi-Layered Ti-Ta-Zr Coatings by Non-Vacuum Electron Beam Cladding

Abstract:

In this study Ti-Ta-Zr coatings fabricated on VT1-0 titanium substrates by non-vacuum electron beam cladding in one, two and three passes were investigated. Coatings were characterized by a high quality; such defects as cracks and voids were not observed. The structure of coating was commonly dendritic. The acicular structure in the one-layered coating and in the first layer of multilayered coatings was revealed by using scanning electron microscopy (SEM). The results of the energy dispersive X-ray (EDX) analysis indicated the presence of tantalum and zirconium segregations in dendrite arms and in the space between them. It was found that dendritic branches contained the maximum of tantalum while an increased amount of zirconium was concentrated in the interdendritic space. The maximum concentration of alloying elements (56.87 wt. % Ta and 22.22 wt. % Zr) was obtained in the layer cladded in the third pass of an electron beam. The microhardness of Ti-Ta-Zr layers rose from 4.5 GPa to 6 GPa with an increase in .the percentage of alloying elements

• Periodical: Applied Mechanics and Materials (Volume 698)
• Pages: 424-429
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.698.424
• Online since: December 2014
• Authors: Vitaliy V. Samoylenko*, Daria V. Lazurenko, Olga G. Lenivtseva, Vasily S. Lozhkin
• Keywords: Multi-Layer Coatings, Non-Vacuum Electron Beam Treatment, Tantalum, Titanium, Zirconium

References

[1] G. Lütjering and J.C. Williams Titanium (Engineering Materials and Processes), 2nd ed. (Springer, 2007).

[2] A. Ravi Shankar, R.K. Dayal, R. Balasubramaniam, V.R. Raju, R. Mythili, S. Saroja, M. Vijayalakshmi, V.S. Raghunathan, Effect of heat treatment on the corrosion behaviour of Ti-5Ta-1. 8Nb alloy in boiling concentrated nitric acid, J. Nuclear Materials 372 (2008).

DOI: 10.1016/j.jnucmat.2007.03.216

[3] Y.L. Zhou, M. Niinomi, T. Akahori, H. Fukui, H. Toda, Corrosion resistance and biocompatibility of Ti-Ta alloys for biomedical apllications Mater. Sci. Eng. A 398 (2005) 28–36.

DOI: 10.1016/j.msea.2005.03.032

[4] K.A. de Souza, A. Robin, Influence of concentration and temperature on the corrosion behavior of titanium, titanium-20 and 40% tantalum alloys and tantalum in sulfuric acid solutions, Mater. Chem. Phys. 103 (2007) 351–360.

DOI: 10.1016/j.matchemphys.2007.02.026

[5] V.K. Balla, S. Banerjee, S. Bose, A. Bandyopadhyay, Direct laser processing of a tantalum coating on titanium for bone replacement structure, Acta Biomater. 6 (2010) 2329-2334.

DOI: 10.1016/j.actbio.2009.11.021

[6] I.A. Bataev, A.A. Bataev, M.G. Golkovsky, A.Y. Teplykh, V.G. Burov, S.V. Veselov, Non-vacuum electron-beam boriding of low-carbon steel, Surf. Coat. Technol. 207 (2012) 245–253.

DOI: 10.1016/j.surfcoat.2012.06.081

[7] D.O. Mul, N.S. Belousova, D.S. Krivezhenko, L.I. Shevtsova, A.A. Losinskaya, Electron beam cladding of powder mixtures containing titanium and tantalum on specimens of steel 40Х, Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty). 63 (2014).

[8] I.A. Bataev, A.A. Bataev, M.G. Golkovski, D.S. Krivizhenko, A.A. Losinskaya, O.G. Lenivtseva, Structure of surface layers produced by non-vacuum electron beam boriding, Appl. Surf. Sci. 284 (2013) 472– 481.

DOI: 10.1016/j.apsusc.2013.07.121

[9] O.G. Lenivtseva, I. A Bataev, N.S. Belousova, E.D. Golovin, T.A. Zimoglyadova, Atmospheric electron-beam cladding of carbon containing powder mixtures onto technically pure titanium VT1-0, Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) 61 (2013).

[10] D.V. Lazurenko, I.A. Bataev, A.A. Ruktuev, A.M. Teplyh, V.V. Samoylenko, I.A. Polyakov, The improvement of corrosion resistance of steel constructions by using the processes of overlay welding of the powder mixtures and explosion welding, Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) 61 (2013).

[11] M.G. Golkovski, I.A. Bataev, A.A. Bataev, A.A. Ruktuev, T.V. Zhuravina, N.K. Kuksanov, R.A. Salimov, V.A. Bataev, Atmospheric electron-beam surface alloying of titanium with tantalum, Mater. Sci. Eng. A 578 (2013) 310–317.

DOI: 10.1016/j.msea.2013.04.103

[12] M.G. Golkovski, V.V. Samoylenko. A.I. Popeliukh, A.A. Ruktuev, N.V. Plotnikova, N.S. Belousova, Multilayered electron-beam overlay welding of the tantalum-containing powder mixtures on the commercial pure titanium, Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty). 61 (2013).

[13] S.N. Fadeev, Y.I. Golubenko, N.K. Kuksanov, Accelerator ELV-12 and its applications in environment protection technologies, Probl. Atom. Sci. Technol. Ser. Nucl. Phys. Investigat. 1 (2004) 178–180.