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2021 №06 (05) DOI of Article
10.37434/tpwj2021.06.06
2021 №06 (07)

The Paton Welding Journal 2021 #06
TPWJ, 2021, #6, 36-40 pages

Influence of the conditions of weld pool protection by argon on the properties of welds in tig welding of titanium

Authors
V.P. Prilutskyi and L.Ye. Yeroshenko
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
A procedure was developed that allows an experimental determination of a correlation between an increased oxygen content in welding torch argon, intensity of radiation of OI atomic oxygen lines in the arc and the corresponding change in the properties of welds in real time at welding of titanium. It was found that an increase in oxygen content in argon to 0.34 vol.% at violation of the weld protection leads to an increase in the tensile strength of weld metal by 30 % and at the same time reduction in ductility by 65 %. The proposed procedure can be used to create a database at development of systems for predicting the operational reliability of welded structures from titanium alloys by quantitative indices of changes in the characteristics of the weld metal during welding. 9 Ref., 4 Tables, 8 Figures.
Keywords: argon arc (TIG) welding, VT1-0 titanium alloy, violation of argon protection, gas impurities, prediction of weld properties

Received 25.02.2021

References

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