Electrometallurgy Today, 2023, №03



2023 №03 (05)

DOI of Article 10.37434/sem2023.03.06

2023 №03 (07)

---

Electrometallurgy Today (Sovremennaya Elektrometallurgiya), 2023, #3, 40-47 pages

Influence of structure-phase composition of titanium alloys doped by niobium and silicon, on mechanical characteristics of their welded joints

L.I. Markashova , S.G. Hryhorenko, O.M. Berdnikova, S.V. Akhonin, O.S. Kushnaryova, T.O. Alekseenko, E.V. Polovetskyi

E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

Abstract
Results of detailed investigations by the method of transmission electron microscopy are presented, and evaluation was performed in the system of chemical composition→structure→properties of welded joints produced by electron beam welding of experimental high-temperature multicomponent titanium alloys doped by niobium and silicon. It was found that in order to eliminate the gradient by strength and fracture toughness, it is necessary to ensure formation of a homogeneous dispersed platelike structure at uniform distribution of the density of dislocations and phase precipitate particles. Such a structure will ensure a high level of mechanical properties and crack resistance of metal in titanium alloy welded joints. 20 Ref., 2 Tabl., 6 Fig.
Keywords: titanium alloys, chemical composition, welded joints, structural-phase composition, dislocation structure, substructure, phase formation, stoichiometric composition, strengthening, local internal stresses, crack resistance

Received 14.07.2023

References

1. Eremenko, V.N. (1960) Titanium and its alloys. Kyiv, Izd-vo AN Ukr.SSR [in Russian].
2. Gurevich, S.M., Zamkov, V.N., Kompan, Ya.Yu. et al. (1979) Metallurgy and technology of welding of titanium and its alloys. Kyiv, Naukova Dumka [in Russian].
3. Gnesin, G.G., Skorokhod, V.V. (2008) Inorganic materials science: Encyclopedic edition in 2 volumes. Materials and Technologies. Kyiv, Naukova Dumka [in Russian]. https://doi.org/10.1134/S0020168508050233
4. (1996) Titanium 95: Science and Technology. In: Proc. of 8th World Conf. on Titanium, Birmingham, UK, London.
5. Heping Deng, Wu Min, Anjun Mo, Yi Qin. (2023) Forming analysis and heat treatment of TC31 titanium alloy component with high ribs and thin webs. Materials, 16(7), 2860; https://doi.org/10.3390/ma16072860
6. Song, X.Y., Zhang, W.J., Ma, T. et al. (2017) In effect of heat treatment on the microstructure evolution of Ti-6Al-3Sn- 3Zr-3Mo-3Nb-1W-0.2 Si titanium alloy. Mat. Sci. Forum; Trans. Tech. Publications Ltd. Stafa-Zurich, Switzerland, 1828-1833. https://doi.org/10.4028/www.scientific.net/MSF.879.1828
7. Zhang, W., Song, X., Hui, S. et al. (2014) W. Tensile behavior at 700 °C in Ti-Al-Sn-Zr-Mo-Nb-W-Si alloy with a bi-modal microstructure. Mater. Sci. Eng. A, 595, 159-164. https://doi.org/10.1016/j.msea.2013.11.096
8. Dipeng, W., Yong, W., Minghe, C. et al. (2019) High temperature flow behavior and microstructure evolution of TC31 titanium alloy sheets. Rare Met. Mater. Eng., 48, 3901-3910.
9. Dang, K., Wang, K., Liu, G. (2021) Dynamic softening and hardening behavior and the micro-mechanism of a TC31 high temperature titanium alloy sheet within hot deformation. Materials, 14, 6515. https://doi.org/10.3390/ma14216515
10. Yongnan Chen, Wenqing Yang, Arixin Bo, Yuantong Gu. (2018) Underlying burning resistant mechanisms for titanium alloy. Materials and Design, 156, 588-595. https://doi.org/10.1016/j.matdes.2018.07.025
11. Akhonin, S.V., Vrzhizhevskii, E.L., Belous, V.Yu., Petrichenko, I.K. (2017) Influence of preheating parameters and local heat treatment on structure and properties of dispersion-strengthened joints of silicon-containing titanium alloys made by electron beam welding. The Paton Welding J., 7, 43-47. https://doi.org/10.15407/tpwj2017.07.09
12. 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. https://doi.org/10.37434/sem2022.02.01
13. Markashova, L.I., Poznyakov, V.D., Berdnikova, E.N. et al. (2017) Structure and service properties of welded joints of high-strength steels, aluminium and titanium alloys. Paton Welding J., 7, 6-14. https://doi.org/10.15407/tpwj2017.07.02
14. Markashova, L.I., Akhonin, S.V., Grigorenko, G.M. et al. (2012) Structure and properties of welded joints on titanium alloys containing silicon additions. The Paton Welding J., 11, 6-15.
15. Paton, B.E., Grigorenko, G.M., Markashova, L.I. et al. (2018) Structure of large profiled single crystals of tungsten, produced by additive plasma-induction surfacing. Suchasna Elektrometal., 4, 42-51. https://doi.org/10.15407/sem2018.04.03
16. Markashova, L., Tyurin, Y., Berdnikova, O. et al. (2019) Effect of nano-structured factors on the properties of the coatings produced by detonation spraying method. Lecture Notes in Mechanical Engineering, 109-117. https://doi.org/10.1007/978-981-13-6133-3_11
17. Markashova, L., Berdnikova, O., Alekseienko, T. et al. (2019) Nanostructures in welded joints and their interconnection with operation properties. Advances in Thin Films, Nanostructured Materials, and Coatings. Eds by A.D. Pogrebnjak, V. Novosad. Singapore, Springer, 119-128. https://doi.org/10.1007/978-981-13-6133-3_12
18. Markashova, L.I., Pashchin, N.A., Berdnikova, E.N. et al. (2018) Influence of impulsive electric current on the fine structure of AMg6 aluminum alloy subjected to electrodynamic treatment. Mater. Sci., 54(1), 82-87. https://doi.org/10.1007/s11003-018-0161-8
19. Markaszowa, L.I., Poznjakow, W.D., Berdnikowa, E.N. (2018) Effect of welding parameters on the structure, mechanical properties and crack resistance of welded joints made of steel 14HGN2MDAFB. Biuletyn Instytutu Spawalnictwa w Gliwicach, 62(2), 41−49. https://doi.org/10.17729/ebis.2018.2/5
20. Grigorenko, G.M., Markashova, L.I., Golovko, V.V. et al. (2020) Influence of titanium-containing inoculants on the structure of metal in the welds of high-strength low-alloy steels. Materials Science, 56, 195-202. https://doi.org/10.1007/s11003-020-00415-z

---

Advertising in this issue:

---