Automatic Welding, 2025, №04

2025 №04 (01)

2025 №04 (03)

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"Avtomatychne Zvaryuvannya" (Automatic Welding), #4, 2024, pp. 11-17

Narrow gap welding of titanium alloy PT3V with a control 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 NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: belousvy@gmail.com

Tungsten inert gas (TIG) welding of titanium alloys in a narrow gap 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 control magnetic field for producing joints of titanium alloy PT3V plates with thicknesses of 45 mm and 64 mm. The strength of the welded joints of PT3V titanium alloy produced by narrow-gap welding with a control 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. 18 Ref., 3 Tabl., 9 Fig.
Keywords: narrow-gap welding, titanium, titanium alloy, TIG welding, tungsten electrode, control magnetic field, heat input, structure, microstructure, mechanical properties, metallography


Received: 25.02.2025
Received in revised form: 04.04.2025
Accepted: 16.07.2025

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