Eng
Ukr
Rus
Print

2023 №12 (02) DOI of Article
10.37434/as2023.12.03
2023 №12 (04)

Automatic Welding 2023 #12
Avtomaticheskaya Svarka (Automatic Welding), #12, 2023, pp. 18-23

Influence of pre-heating on TIG-welding thermal cycle of high-temperature titanium alloy of TI‒AL‒ZR‒SN‒MO‒NB‒SI system

R.V. Selin1, V.Yu. Bilous1, S.B. Rukhanskyi1, I.B. Selina2, L.M. Radchenko1

1E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
2National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute» 37 Prospect Beresteiskyi (former Peremohy), 03056, Kyiv, Ukraine

The main direction of improving the operational characteristics of titanium alloys is the creation of heat resistant and high temperature titanium alloys. The high specific strength and corrosion resistance of this type of alloys, at temperatures up to 500…600 °С, enables making them the main structural material for aircraft and rocket engineering. However, their widespread use is associated with the problem of precipitation of brittle phases during welding, which requires the use of additional technological operations, such as local heat treatment or pre-heating. In this paper, the finite element modeling method was applied to study the influence of the TIG welding thermal cycle of the high temperature titanium alloy of Ti‒6.5Al‒5.3Zr‒2.2Sn‒0.6Mo‒0.5Nb‒0.75Si system with and without the use of pre-heating and to plot the cooling rates diagrams of the produced welded joints. Ref. 10, Tabl. 2, Fig. 12.
Keywords: high temperature titanium alloy, TIG welding, finite element modeling, pre-heating


Received: 13.03.2023

References

1. Taranova, T.G., Tunik, A.Yu., Akhonin, S.V. et al. (2012) Peculiarities of structure of Ti-Si-X titanium alloy joints with dispersion hardening performed by electron beam welding. Visnyk NUK, 5, 125-130 [in Ukrainian].
2. Anca, A., Cardona, A., Risso, J., Fachinotti, V.D. (2011) Finite element modeling of welding processes. Applied Mathematical Modelling, 35(2), 688-707. https://doi.org/10.1016/j.apm.2010.07.026
3. Akhonin, S.V., Berezos, V.O., Pikulin, O.M. et al. (2022) Producing high-temperature titanium alloys of Ti-Al-Zr- Si-Mo-Nb-Sn system by electron beam melting. Suchasna Elektrometal., 2, 3-9 [in Ukrainian]. https://doi.org/10.37434/tpwj2022.07.07
4. Akhonin, S.V., Severin, A.Yu., Pikulin, O.M. et al. (2022) Structure and mechanical properties of high-temperature titanium alloy of Ti-Al-Zr-Si-Mo-Nb-Sn system after deformation treatment. Suchasna Elektrometal., 4, 43-48 [in Ukrainian]. https://doi.org/10.37434/sem2022.04.07
5. Akhonin, S.V., Bilous, V.Yu., Selin, R.V. et al. (2022) Argon- arc welding of high-temperature titanium alloy doped by silicon. The Paton Welding J., 5, 26-32. https://doi.org/10.37434/tpwj2022.05.04
6. Akhonin, S.V., Belous, V.Yu., Selin, R.V. (2021) Effect of pre-heating and post-weld local heat treatment on the microstructure and mechanical properties of low-cost β-titanium alloy welding joints, obtained by EBW. Defect and Diffusion Forum, 416, 87-92. https://doi.org/10.4028/p-o8uehr
7. Bros, H., Michel, M., Castanet, R. (1994) Enthalpy and heat capacity of titanium based alloys. J. of Thermal Analysis and Calorimetry, 41(1), 7-24. https://doi.org/10.1007/BF02547007
8. Maglić, K.D., Pavičić, D.Z. (2001) Thermal and electrical properties of titanium between 300 and 1900 K. Inter. J. of Thermophysics, 22, 1833-1841. https://doi.org/10.1023/A:1013151303111
9. Akhonin, S.V., Belous, V.Y., Selin, R.V., Kostin, V.A. (2021) Influence of TIG welding thermal cycle on temperature distribution and phase transformation in low-cost titanium alloy. In: Proc. of IOP Conf. Series: Earth and Environmental Sci., 688(1), 012012. https://doi.org/10.1088/1755-1315/688/1/012012
10. Akhonin, S.V., Belous, V.Yu., Muzhichenko, A.F., Selin, R.V. (2013) Mathematical modeling of structural transformations in HAZ of titanium alloy VT23 during TIG welding. The Paton Welding J., 3, 24-27.

Advertising in this issue: