SEM, 2021, #2, 13-18 pages
Production of large-sized titanium ingots by the method of electron beam melting
S.V. Akhonin1, O.M. Pikulin1, V.O. Berezos1, A.Yu. Severin1, O.G. Erokhin2
1E.O. Paton Electric Welding Institute of the NAS of Ukraine.
11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: email@example.com
2SC «SPC «Titan» of the E.O. Paton Electric Welding Institute of the NAS of Ukraine»
6 Raketna Str., 03028, Kyiv, Ukraine. E-mail: firstname.lastname@example.org
Comprehensive research was performed on producing large-sized ingots of 1100 mm dia and up to 3 m length from
Grade 2 titanium alloy by the method of cold-hearth electron beam melting in the production facilities of SC «SPC
«Titan» of the E.O.Paton Electric Welding Institute of the NAS of Ukraine» in a multifunctional electron beam unit
UE5810. It is shown that in production of large-sized titanium ingots by cold-hearth electron beam melting the energy
losses for radiation and evaporation should be compensated by the efficiency of the melting process, taking into account
the general metal losses for evaporation. As a result of the studies, it was determined that the content of impurity
elements in the metal of the produced ingot meets the requirements of the standard, hydrogen concentration being
not higher than 0.002 % that is 7 times smaller than the maximum value allowed by the standard, and no increased
content of oxygen or nitrogen was found either in the ingot bottom or head parts. It is shown that the metal of the largesized
titanium ingot produced by cold-hearth electron beam melting has no internal defects in the form of nonmetallic
inclusions, pores or discontinuities, and no significant difference is observed between the macrostructure of the ingot
central and peripheral zones, which is characteristic for ingots in vacuum arc remelting. Ref. 15, Tabl. 1, Fig. 6.
cold-hearth electron beam melting; electron beam installation; large-sized titanium ingot; titanium;
impurity element; ultrasonic testing; nonmetallic inclusions; macrostructure
1. Kablov, E.N. (2012) Strategic directions in development of
materials and technologies of their processing up to 2020.
Aviats. Materialy i Tekhnologii, S, 7–17 [in Russian].
2. Ryabtsev, A.D., Troyansky, A.A., Fridrikh, B. et al. (2014) Alloying
of titanium with carbon in the process of chamber electroslag
remelting, Sovrem. Elektrometall., 2, 3–9 [in Russian].
3. Iliin, A.A., Kolachev, B.A., Polkin, I.S. (2009) Titanium
alloys. Composition, structure, properties. Moscow,
VILS-MATI [in Russian].
4. Leokha, F.L., Ratiev, S.N. (2012) Modern methods for producing
titanium alloys doped with oxygen. Naukovi Pratsi
DNTU. Ser. Metalurgiya, 1–2, 85–94 [in Russian].
5. Paton, B.E., Trigub, N.P., Akhonin, S.V. (2008) Electron
beam melting of refractory and high-reactive metals. Kiev,
Naukova Dumka [in Russian].
6. Paton, B.E., Trigub, N.P., Akhonin, S.V. (2003) Promising
technologies of electron beam melting of titanium. Titan, 2,
20–25 [in Russian].
7. Kelkar, K., Mitchell, A. (2020) Beta Fleck formation in Titanium
Alloys the 14th World Conference on Titanium (Ti 2019)
MATEC Web of Conferences, 321, 1001. doi.org/10.1051/
8. Mitchell, A., Kawakami, A. (2007) Segregation and solidification
in titanium alloys. Ti-2007 Science and Technology. The
Japan Institute of Metals. https://cdn.ymaws.com/titanium.
9. Hongchao Kou, Yingjuan Zhang, Pengfei Li et al. (2014) Numerical simulation of titanium alloy ingot solidification structure during VAR process based on three-dimensional CAFE method. Rare Metal Materials and Engineering, 43(7), 1537-1542. https://doi.org/10.1016/S1875-5372(14)60120-X
10. Gao, L., Huang, H., Jiang, Y. et al. (2020) Numerical study on the solid-liquid interface evolution of large-scale titanium alloy ingots during high energy consumption electron beam cold hearth melting. JOM, 72, 1953-1960. https://doi.org/10.1007/s11837-020-04089-5
11. Zhang Yong, Kou Hongchao, Li, P. et al. (2012). Simulation
on solidification structure and shrinkage porosity (hole) in
TC4 ingot during vacuum arc remelting process. Tezhong
Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys,
12. Paton, B.E., Trigub, N.P., Berezos, V.A. et al. (2010) Production
of large ingots of titanium-based creep-resisting alloys
by electron beam melting. Advances in Electrometall., 3,
13. Zhuk, G.V., Trigub, N.P., Fesan, A.A. (2008) Energy characteristics
of EBCHM process of titanium alloys. Ibid., 4,
14. Sobolevskaya, T.D., Gishkina, V.I., Kovalenko, T.A. (2009)
Influence of quality of sponge titanium on presence of defects
in semi-finished products and parts from titanium alloys. Novi
Materialy i Tekhnologii v Metalurgii ta Mashynobudivnytstvi,
2, 50–54 [in Russian].
15. Illarionov, A.G., Popov, A.A. (2014) Technological and service
properties of titanium alloys: Tutorial. Ekaterinburg, Izdvo
Ural. Un-ta [in Russian].
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