Microstructure of Ti–5Al–4V–2Zr alloy in the initial condition and after irradiation with titanium ions
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Chemical analysis of phases and inclusions in a specimen of Ti–5Al–4V–2Zr titanium alloy in the initial state and after irradiation with titanium ions up to the radiation damage dose of ~1 dpa at 260°C was carried out and the microstructure was studied. Microstructural analysis was performed by the methods of transmission electron microscopy, energy dispersion X-ray spectroscopy, and atom probe tomography. Results of the chemical analysis of the matrix α phase and inclusions of β phase grains are given. It is shown that the α phase is enriched in aluminum up to 10 at % and the β phase is enriched in vanadium up to 20 at % in the initial state in the Ti–5Al–4V–2Zr alloy. Heavy ion irradiation induces the formation of dislocation loops of 3 to 12 nm with the number density of ~1022 m–3. A high number density (up to ~1024 m–3) of nanoscale precipitations with the average size of ~2 nm is formed during alloy irradiation in the α phase.
Keywordstitanium alloy ion irradiation radiation-induced defects solid solution decomposition
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- 3.Davis, J.W., Ulrickson, M.A., and Causey, R.A., Use of titanium in fusion components, J. Nucl. Mater., 1994, vol. 212–215, pp. 813–817.Google Scholar
- 5.Morrissey, D.J., Status of the FRIB project with a new fragment separator, J. Phys. Conf. Ser., 2011, vol. 267, p. 012001.Google Scholar
- 6.Parshin, A.M. and Muratov, O.E., Use of titanium alloys for reactor pressure vessels, Vopr. At. Nauki Tekh., Ser.: Fiz. Radiats. Povrezhdenii Radiats. Materialoved., 2005, no. 3 (86), pp. 179–181.Google Scholar
- 11.Amroussia, A., Avilov, M., Boehlert, C.J., Durantel, F., Grygiel, C., Mittig, W., Monnet, I., and Pellemoine, F., Swift heavy ion irradiation damage in Ti–6Al–4V and Ti–6Al–4V–1B: Study of the microstructure and mechanical properties, Nucl. Instrum. Methods Phys. Res., Sect. B, 2015, vol. 365, pp. 515–521.CrossRefGoogle Scholar
- 12.Dayal, P., Bhattacharyya, D., Mook, W.M., Fu, E.G., Wang, Y.-Q., Carr, D.G., Anderoglu, O., Mara, N.A., Misra, A., Harrison, R.P., and Edwards, L., Effect of double ion implantation and irradiation by Ar and He ions on nanoindentation hardness of metallicalloys, J. Nucl. Mater., 2013, vol. 438, pp. 108–115.CrossRefGoogle Scholar
- 13.Oryshchenko, A.S., Leonov, V.P., and Schastlivaya, I.A., Low-activating titanium alloys for low-power reactor vessels, Titan, 2015, vol. 2 (47), pp. 25–30.Google Scholar
- 14.Oryshchenko, A.S., Gorynin, I.V., Leonov, V.P., and Schastlivaya, I.A., Titanium alloys for low and medium power reactor vessels, Vopr. Materialoved., 2014, no. 2 (78), pp. 199–210.Google Scholar
- 15.Rogozhkin, S.V., Aleev, A.A., Zaluzhnyi, A.G., Kuibida, R.P., Kulevoi, T.V., Nikitin, A.A., Orlov, N.N., Chalykh, B.B., and Shishmarev, V.B. Effect of irradiation by heavy ions on the nanostructure of perspective materials for nuclear power plants, Phys. Met. Metallogr., 2012, vol. 113, no. 2, pp. 200–211.Google Scholar
- 18.Golden Book of Phase Transitions. Phase Transitions Database PTDB-2002, Wroclaw, 2002, vol. 1, pp. 1–123.Google Scholar
- 20.Kornilov, I.I., Titan (Titanium), Moscow: Nauka, 1975, pp. 64–65.Google Scholar
- 21.Kozhevnikov, O.A., Nesterova, E.V., Rybin, V.V., and Yarmolovich, I.I., Mechanical properties, fine structure, and micromechanisms of fracture in titanium a- alloys irradiated with neutrons, Met. Sci. Heat Treat., 1999, vol. 41, no. 9, pp. 412–416.Google Scholar