| 2020 №02 (02) |
DOI of Article 10.37434/sem2020.02.03 |
2020 №02 (04) |
Electrometallurgy Today (Sovremennaya Elektrometallurgiya), 2020, #2, 18-22 pages
Producing large-sized ingots of titanium aluminides by EBM method
S.V. Akhonin1, A.Yu. Severin1, V.O. Berezos1, O.M. Pikulin1, O.I. Glukhenkii2, O.I. Bondar2
1E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
2Institute of Electrodynamics of the NAS of Ukraine. 57 Peremohy Ave., 03057, Kyiv, Ukraine. E -mail: gai56@ied.org.ua
Abstract
Calculations for an ingot of 300 mm diameter of Ti-Al system intermetallic were conducted within the framework of the mathematical model of cylindrical ingots crystallization at electron beam melting. As a result of calculations, temperature fields in the ingot during electron beam melting were obtained, and technological modes of conducting the process were determined. The determined technological modes were used to produce a large-sized ingot of 300 mm diameter from Ti29Al alloy in electron beam installation UE-121. The quality of this ingot was studied and it was shown that application of optimized technological modes allows producing large-sized titanium aluminide ingots of homogeneous composition and without defects. Ref. 12, Table 1, Fig. 6.
Keywords: electron beam melting; intermetallic of Ti–Al system; mathematical model; ingot; chemical composition; structure
Received 04.20.2020
References
1. Appel, F., Ohring, M., Paul, J.D.H. et al. (2001) In: Proc. of the 2nd Int. Symp. on Structural Intermetallics. The Minerals, Metals & Mater. Soc., 63–72.2. Postans, P.J., Cope, M.T, Moorhuse, S., Thakker, A.B. (1993) Applications of titanium aluminides in gas turbine engine components, Titanium 92. Science and technology. The Minerals and Materials Society, 2, 2907–2914.
3. Pavlinich, S.P., Zaitsev, M.V. (2018) Application of intermetallics of titanium alloys in casting of assemblies and GTE blades of lightweight structures for aircraft engines of new generation. Vestnik UGATU, 15(4), 200–202 [in Russian].
4. Bannykh, O.A., Povarova, K.B. (1989) Prospects of development of refractory and heat-resistant alloys and intermetallic compounds. In: New metallic materials. Kiev, PWI, 29–33 [in Russian].
5. Kulikovsky, R.A., Pakholka, S.N., Pavlenko, D.V. (2015) Prospects of commercial application of titanium aluminides in aircraft engine construction. Stroitelstvo, Materialovedenie, Mashinostroenie, 80, 369–372 [in Russian].
6. Iliin, A.A., Kolachev, B.A., Polkin, I.S. (2009) Titanium alloys. Composition, structure, properties: Refer. book. Moscow, VILS-MATI [in Russian].
7. Bernstein, M.L. (1979) Atlas of defects of steel. Moscow, Metallurgiya [in Russian].
8. Appel, F., Paul, J.D.H., Oehring, M. (2011) Gamma titanium aluminide alloys: Science and technology. Wiley-V.C.H. https://doi.org/10.1002/9783527636204
9. Illarionov, A.G., Popov, A.A. (2014) Technological and operational properties of titanium alloys: Manual. Ekaterinburg, Izd-vo Ural. Un-ta [in Russian].
10. Kablov, D.E., Panin, P.V., Shiryaev, A.A., Nochovnaya, N.A. (2014) Experience of application of vacuum-arc furnace ALD VAR L200 for casting of ingots of heat-resistant alloys based on titanium aluminides. Aviats. Materialy i Tekhnologii, 2, 27-33 [in Russian]. https://doi.org/10.18577/2071-9140-2014-0-2-27-33
11. Akhonin, S.V., Gorislavets, Yu.M., Glukhenkiy, A.I. et al. (2019) Modeling hydrodynamic and thermal processes in the mould in cold-hearth electron beam melting. Suchasna Elektrometal., 4, 9-17 [in Ukrainian]. https://doi.org/10.15407/sem2019.04.02
12. Gao Yong, Zhang Lijing, Gao Wenli, Zhang Hu (2011) Prediction and improvement of shrinkage porosity in TiAl based alloy. Research & Development, 8(1), 19–24.
Advertising in this issue:
