The Paton Welding Journal, 2023, №12



2023 №12 (05)

DOI of Article 10.37434/tpwj2023.12.06

2023 №12 (01)

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The Paton Welding Journal, 2023, #12, 50-58 pages

Mechanical characteristics of welded joints of high-strength titanium alloys produced by various welding methods

S.V. Akhonin¹, V.Yu. Bilous¹, R.V. Selin¹, E.L. Vrzhyzhevskyi¹, S.L. Antonyuk²

¹E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: y.kostetsky@paton.kiev.ua
²SC «O.K. Antonov ANTK». 1 Academic Tupolev Str., 03062, Kyiv, Ukraine. E-mail: info@antonov.com

Abstract
Properties of welded joints of VT19 and Ti–2.8Al–5.1Mo–4.9Fe titanium pseudo-β-alloys and complex Т120 titanium (α+β)-alloy, produced by electron beam and argon-arc welding and after several kinds of heat treatment (annealing, regulated annealing, quenching in water, delayed cooling) were studied. In addition to reliable protection of welded joints, another advantage of the technology of electron beam welding of titanium and alloys on its base is the possibility of performing local preheating and further heat treatment in the vacuum chamber. A quality criterion was proposed in order to compare the properties of welded joints in as-welded condition and after additional heat treatment. It was determined that performance of electron beam welding using local heat treatment and preheating, as well as making the joints by argon-arc welding using filler material, which allows lowering by 10…20 % the amount of alloying elements in the weld metal, compared to base metal, ensures a high quality of welded joints of high-strength titanium pseudo-β-alloys in as-welded condition. 19 Ref., 7 Tabl., 5 Fig.
Keywords: titanium, titanium alloys, two-phase, (α+β)-, sparsely-alloyed, pseudo-β-, welded joints, heat treatment, annealing, quenching, aging, microstructure, mechanical properties

Received: 02.10.2023
Accepted: 26.12.2023

References

1. Boyer, R.R., Williams, J.C. (2011) Developments in research and applications in the titanium industry in the USA. Proc. of 12th World Conf. on Titanium, I, 10-19.
2. (2013) Titanium Metal: Market Outlook to 2018. 6th Ed. Roskill Information Services Ltd, USA.
3. Dobrescu, M., Dimitriu, S., Vasilescu, M. (2011) Studies on Ti-Al-Fe low-cost titanium alloys manufacturing, processing and applications. Metalurgia Int., 16(4), 73.
4. Boyer, R.R., Briggs, R.D. (2005) The use of β titanium alloys in the aerospace industry. J. Mater. Eng. and Performance, 14(6), 681−685. https://doi.org/10.1361/105994905X75448
5. Cotton, J.D., Briggs, R.D., Boyer, R.R. et al. (2015) State of the art in beta titanium alloys for airframe applications. JOM, 67(6), 1281-1303. https://doi.org/10.1007/s11837-015-1442-4
6. Liu, H., Wang, Haomin, Zhang, Zhen et al. (2019) Enhancing the mechanical properties of electron beam welded TC17 titanium alloy joint by post-weld heat treatment. J. of Alloys and Compounds, 810, 151−937. https://doi.org/10.1016/j.jallcom.2019.151937
7. Bolzoni, Leandro, Elisa María Ruiz-Navas, Elena Gordo (2017) Quantifying the properties of low-cost powder metallurgy titanium alloys. Materials Sci. and Eng.: A, 687, 47−53. https://doi.org/10.1016/j.msea.2017.01.049
8. Kaur, M., Singh, K. (2019) Review on titanium and titanium based alloys as biomaterials for orthopedic applications. Materials Sci. and Eng.: C, 102, 844−862. https://doi.org/10.1016/j.msec.2019.04.064
9. Froes, F.H. (2015) Titanium physical metallurgy processing and applications. USA, ASM Int., 265-269. https://doi.org/10.31399/asm.tb.tpmpa.9781627083188
10. Weiping, F., Xiao, T, Zhang, Y.P. et al. (2019) Stress corrosion crack sensitivity of ultra-thick TC4 titanium alloy electron beam welding joints. Transact. of the China Welding Institution, 40, 121-8.
11. Tang, B., Kou, H., Zhang, X. et al. (2016) Study on the formation mechanism of α lamellae in a near β titanium alloy. Prog. Nat. Sci. Mater. Int., 26, 385-390. https://doi.org/10.1016/j.pnsc.2016.06.009
12. Fan, J.K., Kou, H.C., Lai, M.J. et al. (2013) Hot deformation mechanism and microstructure evolution of a new near β-titanium alloy. Materials Sci. and Eng. A, 584, 121-132. https://doi.org/10.1016/j.msea.2013.07.019
13. Moiseev, V.N., Kulikov, R.F., Kirillov, Yu.G. et al. (1979) Welded joints of titanium alloys. Moscow, Metallurgiya [in Russian].
14. Khorev, A.I. (2012) Titanium superalloy VT19. Tekhnologiya Mashinostroeniya, 6, 2−5 [in Russian].
15. Akhonin, S.V., Severin, A.Yu., Belous, V.Yu. et al. (2017) Structure and properties of titanium alloy VT19, produced by the electron beam melting, after thermomechanical treatment. Sovrem. Elektrometall., 3, 19-24 [in Russian]. https://doi.org/10.15407/sem2017.03.04
16. Li, Y., Wang, H., Han, K. et al. (2017). Microstructure of Ti−45Al−8.5 Nb-0.2 W-0.03 Y electron beam welding joints. J. Mater. Proc. Technol., 250, 401−409. https://doi.org/10.1016/j.jmatprotec.2017.07.004
17. Liu, P., Zhang, G.M., Zhai, T., Feng, K.Y. (2017) Effect of treatment in weld surface on fatigue and fracture behavior of titanium alloys welded joints by vacuum electron beam welding. Vacuum, 141, 176-180. https://doi.org/10.1016/j.vacuum.2017.04.019
18. Akhonin, S.V., Bilous, V.Yu., Selin, R.V., Petrichenko, I.K. (2020) Heat treatment of high-strength pseudo-β-titanium alloy produced by EBM process and of its welded joints. Suchasna Elektrometal., 1, 14-25 [in Ukrainian]. https://doi.org/10.37434/sem2020.01.02
19. Akhnonin, S.V., Bilous, V.Yu., Selin, R.V. et al. (2021) Influence of heat treatment on the structure and properties of welded joints of high-strength titanium alloys based on β-phase. Suchasna Elektrometal., 4, 51−58 [in Ukrainian]. https://doi.org/10.37434/sem2021.04.08

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Suggested Citation

S.V. Akhonin, V.Yu. Bilous, R.V. Selin, E.L. Vrzhyzhevskyi, S.L. Antonyuk (2023) Mechanical characteristics of welded joints of high-strength titanium alloys produced by various welding methods. The Paton Welding J., 12, 50-58.

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