The effect of megaplastic deformation in the Bridgman chamber on the phase transformations, corrosion behavior, and microhardness of pure VT1-00 and VT1-0 titanium
Due to the combination of lightness, high specific strength and corrosion resistance, titanium and its alloys are highly interesting for applying in many areas of industry (mechanical engineering, shipbuilding, and aircraft manufacturing). Technically pure titanium is the first choice to be used in medicine because of its high biocompatibility and lack of toxic elements. Pure titanium has high ductility and corrosion resistance but it is inferior to titanium alloys in other mechanical characteristics, such as tensile strength, yield strength, and hardness. Megaplastic deformation (MPD) is a promising method for increasing the strength of titanium to the level of highly alloyed alloys. The paper deals with the study of the influence of MPD in the Bridgman chamber on the structure (phase transformations occurring in technically pure VT1-00 and VT1-0 titanium), corrosion resistance, and microhardness. Using the high-pressure torsion (HPT), the authors obtained samples with different degrees of deformation: from 0.25 to 4 revolutions of the movable anvil. The authors carried out the X-ray diffraction analysis and electrochemical tests of samples and studied the phase composition of titanium samples of two grades containing 0.1 and 0.3 % of impurities before and after MPD. The study identified that the HPT led to the formation of a two-phase mixture a+ɷ. The results showed the positive effect of MPD on the mechanical properties of titanium. The microhardness of the deformed material increases in comparison with the initial state, while there is no deterioration in the corrosion resistance in the studied environment. Under all deformation modes, titanium stays in a passive state. For the VT1-0 alloy, the stationary corrosion potentials of samples after HPT have a more positive value compared to the original undeformed material.
Rack H.J., Qazi J.I. Titanium alloys for biomedical applications. Materials Science and Engineering C, 2006, vol. 26, no. 8, pp. 1269–1277.
Kardashev B.K., Narykova M.V., Betekhtin V.I., Kadomtsev A.G. Evolution of elastic properties of Ti and its alloys due to severe plastic deformation. Fizicheskaya mezomekhanika, 2019, vol. 22, no. 3, pp. 71–76.
Glezer A.M. Modern methods of creating high-strength multifunctional materials. Sbornik trudov IX Evraziyskoy nauchno-prakticheskoy konferentsii “Prochnost neodnorodnykh struktur – PROST 2018”. Moscow, 2018. P. 7.
Latysh V.V., Burlakov I.A., Zabel’yan D.M., Alimov A.I., Petrov P.A., Stepanov B.A., Chong B.V. Increasing the strength of commercial titanium VT1-0 using the method of severe plastic deformation. Journal of machinery manufacture and reliability, 2018, vol. 47, no. 6, pp. 525–531.
Zhilyaev A.P., Langdon T.G. Using high-pressure torsion for metal processing: Fundamentals and applications. Progress in Materials Science, 2008, vol. 53, no. 6, pp. 893–979.
Rybin V.V. Bolshie plasticheskie deformatsii i razrushenie metallov [Large plastic deformation and fracture of metals]. Moscow, Metallurgiya Publ., 1986. 224 p.
Shurygina N.A., Cheretaeva A.O., Glezer A.M., D’yakonov D.L., Shchetinin I.V., Sundeev R.V., Tomchuk A.A., Muradimova L.F. Effect of the temperature of megaplastic deformation in a Bridgman chamber on the formation of structures and the physicochemical properties of titanium (BT1-0). Bulletin of the Russian Academy of Sciences: Physics, 2018, vol. 82, no. 9, pp. 1113–1124.
Balyanov A., Kutnyakova J., Amirkhanova N.A., Stolyarov V.V., Valiev R.Z., Liao X.Z., Zhao Y.H., Jiang Y.B., Xu H.F., Lowe T.C., Zhu Y.T. Corrosion resistance of ultra-fine-grained Ti. Scripta Materialia, 2004, vol. 51, no. 3, pp. 225–229.
Hoseini M., Shahryari A., Omanovic S., Szpunar J.A. Comparative effect of grain size and texture on the corrosion behaviour of commercially pure titanium processed by equal channel angular pressing. Corrosion Science, 2009, vol. 51, no. 12, pp. 3064–3067.
Ralston K.D., Birbilis N. Effect of grain size on corrosion: A review. Corrosion, 2010, vol. 66, no. 7, pp. 0750051–07500513.
Balakrishnan A., Lee B.C., Kim T.N., Panigrahi B.B. Corrosion behaviour of ultra fine grained titanium in simulated body fluid for implant application. Trends in Biomaterials and Artificial Organs, 2008, vol. 22, no. 1, pp. 54–60.
Amirkhanova N.A., Valiev R.Z., Aleksandrov I.V., Islamgaliev R.K., Kurdyakov Yu.B., Adasheva S.L., Chernyaeva E.Yu., Balyanov A.G., Dautov A.T., Khaydarov R.R. The effect of equal-channel angular pressing on the corrosion behavior of ultrafine-grained materials: nickel, aluminum alloys, titanium alloy VT 1-0, magnesium alloy and UFG of copper obtained by various routes. Vestnik Ufimskogo gosudarstvennogo aviatsionnogo tekhnicheskogo universiteta, 2006, vol. 7, no. 3, pp. 42–51.
Nie M., Wang C.T., Qu M., Gao N., Wharton J.A., Langdon T.G. The corrosion behavior of commercial purity titanium processed by high-pressure torsion. Journal of Materials Science, 2014, vol. 49, no. 7, pp. 2824–2831.
Klevtsov G.V., Valiev R.Z., Klevtsova N.A., Merson E.D., Pigaleva I.N. Corrosion resistance of steels with ultrafine grained structure in hydrogen sulfide environment. Letters on Materials, 2019, vol. 9, no. 3, pp. 282–287.
Faghihi S., Li D., Szpunar J.A. Tribocorrosion behaviour of nanostructured titanium substrates processed by high-pressure torsion. Nanotechnology, 2010, vol. 21, no. 48, p. 485703.
Bozhko P.V., Korshunov A.V., Ilyin A.P., Lotkov A.I., Ratochka I.V. Electrochemical behavior of plastically deformed titanium in sulfuric acid solutions. Izvestiya Tomskogo politekhnicheskogo universiteta, 2011, vol. 319, no. 3, pp. 17–24.
Semenov V.I., Huang S.-J., Tontchev N., Valiev R.R., Belov P.A., Bogale D., Wang A. Corrosion behavior of commercially-pure titamium with different microstructures. Materials science. Non-equilibrium phase transformations, 2017, vol. 3, no. 5, pp. 167–171.
Khlebnikova Yu.V., Egorova L.Yu., Pilyugin V.P., Suaridze T.R., Patselov A.M. Evolutsio of the structure of an α-titanium single crystal during high-pressure torsion. Technical physics. The Russian journal of applied physics, 2015, vol. 60, no. 7, pp. 1005–1013.
Zhilyaev A.P., Popov V.A., Sharafutdinov A.P., Danilenko V.N., Zhilyaev A.P. Shear induced ω-phase in titanium. Letters on materials, 2011, vol. 1, no. 4, pp. 203–207.
Balakrishnan A., Lee B.C., Kima T.N., Panigrahib B.B. Corrosion behavior of ultra fine grained titanium in simulated body fluid for implant application. Trends in Biomaterials and Artificial Organs, 2008, vol. 22, no. 1, pp. 58–64.
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