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ArticleName Microstructural evolution of the commercial titanium VT1-0 under severe plastic deformation
DOI 10.17580/tsm.2019.06.10
ArticleAuthor Burlakov I. A., Bach V. Ch., Petrov A. N., Loginov B. A.

Moscow Polytechnic University, Moscow, Russia:

I. A. Burlakov, Professor at the Department of Materials Forming and Additive Technology
V. Ch. Bach, Postgraduate Student at the Department of Materials Forming and Additive Technology
A. N. Petrov, Professor at the Department of Materials Forming and Additive Technology, e-mail:

Zavod PROTON, Moscow, Russia1 ; National Research University of Electronic Technology MIET, Moscow, Russia 2:
B. A. Loginov, Lead Designer1, Head of Laboratory2, e-mail:


This paper examines the effect of severe plastic deformation during multiaxial forging and further torsional upsetting on the structure of specimens made of the titanium alloy VT1-0. A typical grain size in the microstructure of the specimens following multi-axial forging was 2–3 μm. The following working of the specimens by torsional upsetting helped obtain a nanocrystalline structure. A scanning probe microscope SMM-2000 was used to determine the grain size after torsional upsetting. The total deformation after the two processes (i.e. multi-axial forging and torsional upsetting) reaches  = 5.6–6.2. The typical grain size was 74–112 nm, which is twice smaller than the initial grain size — 30–40 μm. Analysis of the results of an experimental study conducted with the help of an LFM50 tensile testing machine at the rate of 2 mm/min shows that refinement of the structure produces a significant effect on the strength of the material and can help obtain a material with pre-defined properties. A relationship was found between the strength of the titanium alloy VT1-0 and the strain degree and grain size. Structural refinement increases the strength of the titanium alloy VT1-0 to 1,400 MPa, which exceeds the strength of the initial material by more than three times. Optimum regimes of heat treatment were identified to stabilize the structure and increase the specific elongation of the material before possible forming.

keywords Titanium alloy VT1-0, severe deformation, strength, structure refinement, torsional upsetting, scanning tunneling microscope, fine-grained microstructure, nanocrystalline structure, ultimate strength, heat treatment

1. Superplasticity of ultrafine-grained alloys: Experiment, theory, technologies. Ed. by R. R. Mulyukov et al. Moscow : Nauka, 2014. 286 p.
2. Takaki S., Tsuchiyama T., Nakashima K., Hidaka H., Kawasaki K., Futamura Y. Microstructure development of steel during severe plastic deformation. Metals and Materials International. 2004. Vol. 10, No. 6. pp. 533–539.
3. Sakai T., Belyakov A., Miura H. Ultrafine grain formation in ferritic stainless steel during severe plastic deformation. Metallurgical and Materials Transactions: A. 2008. Vol. 39, No. 9. pp. 2206–2214.
4. Valiev R. Z., Islamgaliev R. K., Alexandrov I. V. Bulk nanostructured materials obtained through severe plastic deformation. Progress in Material Science. 2000. Vol. 45, No. 2. pp. 103–189.
5. Sakai T., Miura H., Belyakov A., Kaibyshev R., Jonas J. J. Dynamic and post-dynamic recrystallization under hot, cold and severe plastic deformation conditions. Progress in Materials Science. 2014. Vol. 60, No. 1. pp. 130–207.
6. Popov A. A., Valiev R. Z., Pyshmintsev I. Yu., Demakov S. L., Illarionov A. G. Structure and properties of commercially pure titanium with nanocrystalline structure after deformation and subsequent heating. Fizika metallov i metallovedenie. 1997. Vol. 83, No. 5. pp. 127–133.
7. Valiev R. Z., Aleksandrov I. V. Bulk nanostructured metallic materials. Moscow : Akademkniga, 2007. 400 p.
8. Burlakov I. A., Valitov V. A., Ganeev A. A., Zabel’yan D. M., Morozov S. V., Sukhorukov R. Yu., Utyashev F. Z. Modeling the Structure Formation during Hot Deforming the Billets of the Parts of Gas-Turbine Engines Made of Heat-Resistant Nickel Alloy. Journal of Machinery Manufacture and Reliability. 2016. Vol. 45, No. 5. pp. 469–475.
9. Utyashev F. Z., Raab G. I. Deformation techniques for production and processing of ultrafine-grained and nanostructured materials. Ufa : Gilem, 2013. 376 p.
10. Raab G. I., Valiev R. Z. On producing ultrafine-grained bulk materials with the help of SPD. Vestnik UGATU. 2004. Vol. 5, No. 2. pp. 9–16.
11. Kandarov I. V. Obtaining a prescribed structure in the alloy VT6 to enhance the performance of gas-turbine blades : PhD dissertation. Naberezhnye Chelny, 2016. 148 p.
12. Markushev M. V. On efficiency of certain severe plastic deformation techniques designed to produce bulk nanostructured materials. Letters on Materials. 2011. Vol. 1, No. 1. pp. 36–42.
13. Kurzina I. A., Bozhko I. A., Kalashnikov M. P., Eroshenko A. Yu., Sharkeev Yu. P. Evolution of the structure and mechanical properties of ultrafine-grained titanium. Materialovedenie. 2010. No. 5. pp. 48–55.
14. Kazachenok M. S., Panin A. V., Ivanov Yu. F., Pochivalov Yu. I., Valiev R. Z. Effect of thermal annealing on the mechanical behaviour of the commercial titanium VT1-0 with a submicrocrystalline structure in the surface layer or in the bulk. Fizicheskaya mezomekhanika. 2005. Vol. 8, No. 4. pp. 37–47.
15. Subich V. N., Demin V. A., Shestakov N. A., Vlasov A. V. Stamping with torsion : Monograph. Moscow : MGIU, 2008. 389 p.
16. Latysh V. V., Burlakov I. A., Zabelian D. M., Alimov A. I., Petrov P. A., Stepanov B. A., Bach Wu Chong. Increasing the strength of the commercial titanium VT1-0 with the help of severe plastic deformation. Problemy mashinostroeniya i nadezhnosti mashin. 2018. No. 6. pp. 54–60.
17. Zherebtsov S. V. Structural changes under high plastic deformation and development of techniques to obtain ultrafine-grained structure in semifinished products made of titanium alloys : Doctoral dissertation. Yekaterinburg, 2013. 315 p.
18. Gatina S., Semenova I., Valiev R., Leuthold J. Nanostructuring and phase transformations in the -alloy Ti – 15Mo during high-pressure torsion. Advanced Engineering Materials. 2015. Vol. 17, No. 12. pp. 1742–1747.
19. Lukyanov A., Churakova A., Levin E., Valiev R., Gunderov D., Filatov A., Antipov E. Microstructure refinement in Cu – Fe alloy using high pressure torsion. IOP Conference Series: Materials Science and Engineering. 2014. Vol. 63, No. 1. Article number 012102.
20. Sha G., Tugcu K., Liao X. Z., Ringer S. P., Trimby P. W., Murashkin M. Y., Valiev R. Z. Strength, grain refinement and solute nanostructures of an Al – Mg – Si alloy (AA6060) processed by high-pressure torsion. Acta Materialia. 2014. Vol. 63. pp. 169–179.
21. Kuranova N. N., Makarov V. V., Pushin V. G., Uksusnikov A. N., Valiev R. Z., Gunderov D. V., Lukianov A. V., Prokofiev E. A. Amorphization of bulk titanium nickelide alloys by severe plastic deformation through torsion. Izvestiya RAN. Seriya Fizicheskaya. 2009. Vol. 73, No. 8. pp. 1179–1181.
22. OST 1-90024–71. Titanium alloy plates.

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