Low temperature superplasticity and production of hollow structures out of VT6 titanium alloy

R.Y. Lutfullin, A.A. Kruglov, M.K. Mukhametrakhimov, O.A. Rudenko show affiliations and emails
Accepted  26 May 2015
This paper is written in Russian
Citation: R.Y. Lutfullin, A.A. Kruglov, M.K. Mukhametrakhimov, O.A. Rudenko. Low temperature superplasticity and production of hollow structures out of VT6 titanium alloy. Lett. Mater., 2015, 5(2) 185-188
BibTex   https://doi.org/10.22226/2410-3535-2015-2-185-188

Abstract

Application of the conventional superplasticity (SP) allows producing the unique hollow structures. One remarkable example is the hollow titanium blade of the air engine fan produced by Rolls-Royce. However, high temperature of Ti-6Al-4V titanium alloy processing (~ 927 °С) limits wide industrial application of the conventional SP. On the base of experimental data examples of superplastic forming (SPF) of hollow structures for aerospace application out of ultrafine-grained (UFG) VT6 (Ti-6Al-4V) titanium alloy by using an effect of low temperature SP are demonstrated. We used two-phase VT6 titanium alloy produced in VSMPO, Verhnyaya Salda, Russia. Investigated VT6 alloy had standard chemical composition according GOST 19807-91. The UFG sheets with a mean grain size of about 0,2 μm were processed by multiple step forging and subsequent isothermal rolling. SPF of UFG sheets was performed at temperatures of 550, 600, 650, 700, 750 and 800°C. Trials on SPF within the temperature range of 550 – 800 °C were performed by an original technique using special model parts. Investigated sheets showed good processing properties. The use of the low temperature SP provides high quality of hollow components such as blades. Application of low temperature SP can be a basis for creation of economically efficient SPF technologies for producing hollow structures out of UFG titanium Ti-6Al-4V system alloys.

References (18)

1. European Patent No 0568201, 1993.
2. M. W. Turner, I. J. Andrew. In: Book of Papers. 4th European Conference on Superplastic Forming. By IOM Communications Ltd. U. K. 39-46 (2005).
3. P. N. Comley. Materials Science Forum. Trans Tech Publications. 447-448, 233 (2004).
4. A. Wisbey, B. Geary, D. P. Davies and C. M. Ward - Close. Materials Science Forum. Trans Tech Publications. 170-172, 293-298 (1994).
5. L. D. Hefti. Journal of Materials Engineering and Performance. 17, 178-182 (2008).
6. Patent of Russian Federation No 2134308, 1999. (in Russian) [Патент РФ № 2134308, 1999].
7. G. A. Salischev, R. M. Galeyev, O. R. Valiakhmetov. Journal of Materials Processing Technology. 116, 265-269 (2001).
8. V. V. Astanin. Vestnik UGATU. 2, 34-37 (2002). (in Russian) [В. В. Астанин. Вестник УГАТУ. 2, 34-37 (2002)].
9. A. A. Kruglov, R. Ya. Lutfullin, M. Kh. Mukhametrakhimov. Journal of Advanced Materials. 6, 79-81 (2005) (in Russian) [А. А. Круглов, Р. Я. Лутфуллин, М. Х. Мухаметрахимов. Перспективные материалы. 6, 79-81 (2005)].
10. E. N. Petrov, V. V. Rodionov, E. N. Kuzmin, R. Ya. Lutfullin, R. V. Safiullin. Cellular Structures. Snezhinsk, RFNC-VNIITF (2008) 176 p. (in Russian) [Е. Н. Петров, В. В. Родионов, Э. Н. Кузьмин, Р. Я. Лутфуллин, Р. В. Сафиуллин. Ячеистые конструкции. Снежинск, РФЯЦ-ВНИИТФ (2008) 176 с.].
11. A. A. Kruglov, R. Ya. Lutfullin. Journal of Machinery Manufacture and Reliability. 1, 69-72 (2009) (in Russian) [А. А. Круглов, Р. Я. Лутфуллин. Проблемы машиностроения и надежности машин. 1, 69-72 (2009).].
12. R. Ya. Lutfullin, A. A. Kruglov, R. V. Safiullin. Materials Science and Engineering: A. 503, 52-59 (2009).
13. M. Kawasaki, R. B. Figueiredo, T. G. Langdon. Letters on Materials. 4 (2), 78-83 (2014).
14. R. Ya. Lutfullin, M. Kh. Mukhametrakhimov, A. A. Kruglov. Letters on Materials. 3 (4), 292-295 (2013). (in Russian) [Р. Я. Лутфуллин, М. Х. Мухаметрахимов, А. А. Круглов. Письма о материалах. 3 (4), 292-295 (2013).].
15. O. A. Rudenko, A. A. Kruglov, R. V. Safiullin. Kuznechno-Shtampovochnoe Proizvodstvo. 4, 5 (2006) (in Russian) [O. A. Руденко, А. А. Круглов, Р. В. Сафиуллин. КШП. 4, 5-10 (2006).].
16. O. A. Kaibyshev, R. V. Safiullin, R. Ya. Lutfullin. Materials Science and Technology. 22 (3), 343-348 (2006).
17. O. R. Valiakhmetov, R. M. Galeyev, V. A. Ivan’ko. Nanotechnologies in Russia. 5, 108-111 (2010).
18. O. A. Kaibyshev. Superplasticity of Commercial Alloys. M. Metallurgija. (1984) 264 p. (in Russian) [O. A. Кайбышев. Сверхпластичность промышленных сплавов. М. Металлургия. (1984) 264 с.].

Cited by (4)

1.
E. Klassman, V. Astanin. Lett. Mater. 10(1), 10 (2020). Crossref
2.
A. Kruglov, R. Lutfullin, M. Mukhametrakhimov, O. Rudenko, A. Sarkeeva, R. Safiullin. Lett. Mater. 11(4), 457 (2021). Crossref
3.
I.V. Ratochka, E.V. Naydenkin, I.P. Mishin, O.N. Lykova, O.V. Zabudchenko. Journal of Alloys and Compounds. 891, 161981 (2022). Crossref
4.
I. V. Ratochka, E. V. Naydenkin, I. P. Mishin, O. N. Lykova. Russ Phys J. (2023). Crossref

Similar papers