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Comparative Estimation of the Qualities of the Titanium Alloy Joints Made by Traditional Argon-Arc Welding and Innovative Arc Welding with Alternate-Pulsed Supply of Different Protective Gases

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Abstract

The welded joints of VT20 and OT4-1 titanium alloys formed by an innovative method (alternate-pulsed supply of argon and helium) are shown to have smaller grains and a wider melting zone in comparison with traditional argon-arc welding due to a more effective mechanical and thermal action of an arc in the weldpool. In addition, the innovative joints have a higher plasticity, a smaller scatter of the hardnesses over the cross section, and a higher welding speed.

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Author information

Correspondence to G. P. Fetisov.

Additional information

Translated by K. Shakhlevich

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Fetisov, G.P., Tazetdinov, R.G., Persidskii, A.S. et al. Comparative Estimation of the Qualities of the Titanium Alloy Joints Made by Traditional Argon-Arc Welding and Innovative Arc Welding with Alternate-Pulsed Supply of Different Protective Gases. Russ. Metall. 2019, 1479–1482 (2019). https://doi.org/10.1134/S0036029519130093

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Keywords:

  • innovation
  • arc welding
  • protective gas
  • alternate-pulsed supply of different gases
  • argon
  • helium
  • titanium alloys
  • gas distributor
  • arc pressure