The Paton Welding Journal, 2025, №09

2025 №09 (06)

DOI of Article 10.37434/tpwj2025.09.01

2025 №09 (02)

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The Paton Welding Journal, 2025, #9, 3-9 pages

Narrow gap welding of PT-3V titanium alloy with a controlled magnetic field

S.V. Akhonin, V.Yu. Bilous, R.V. Selin, I.K. Petrichenko, L.M. Radchenko, S.B. Rukhansky

E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: belousvy@gmail.com

Abstract
Tungsten inert gas (TIG) narrow-gap welding of titanium alloys is a cost-effective and efficient method for joining thick titanium alloy structures. The technology of narrow-gap welding of titanium alloys with a magnetically-controlled arc enables a wide range of welding parameter adjustments. This study considers the application of narrow-gap welding with a tungsten electrode and a controlled magnetic field for producing joints of PT-3V titanium alloy plates with thicknesses of 45 and 64 mm. The strength of the welded joints of PT-3V titanium alloy produced by narrow-gap welding with a controlled magnetic field reaches 636 MPa, which is 85 % of the base metal strength, and it is comparable to the properties of welded joints made using the conventional gas tungsten arc welding technology. Application of the obtained results allowed welding joints of titanium alloys with variable thicknesses ranging from 45 to 65 mm while maintaining the same number of passes.
Keywords: narrow-gap welding, titanium, titanium alloy, TIG welding, tungsten electrode, controlled magnetic field, heat input, structure, microstructure, mechanical properties, metallography

Received: 25.02.2025
Received in revised form: 04.04.2025
Accepted: 15.09.2025

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Suggested Citation

S.V. Akhonin, V.Yu. Bilous, R.V. Selin, I.K. Petrichenko, L.M. Radchenko, S.B. Rukhansky (2025) Narrow gap welding of PT-3V titanium alloy with a controlled magnetic field. The Paton Welding J., 09, 3-9.

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