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Structural Strength of Welded Joints of Thermally Hardened Alloy of the Al–Cu–Mg System

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Materials Science Aims and scope

We study welded joints of sheets 4 mm in thickness made of D16T alloy (an analog of 2024-Т3 alloy) in the as-delivered state (hardening and natural aging) and after additional artificial aging. The joints are obtained by fusion welding with the use of the pulsed-arc method with consumable electrode (Zv1201). It is shown that, for some modes of heat-treatment of the welded alloy and welded joint, the ratio of strength of the weld and base metals is equal to 0.9. For the weld metal, the complex structural strength parameter of the material P = [σuΔKthΔKfc ] is 1.25 times higher than for the base metal. We consider the possibility of evaluation of the mechanical characteristics of the investigated welded joints by the nondestructive method according to the specific electric conductivity.

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Authors and Affiliations

  1. Karpenko Physicomechanical Institute, Ukrainian National Academy of Sciences, Lviv, Ukraine

    О. P. Ostash & Yu. V. Holovatyuk

  2. Paton Institute of Electric Welding, Ukrainian National Academy of Sciences, Kyiv, Ukraine

    T. М. Labur, V. А. Koval, V. S. Shynkarenko & М. R. Yavorska

  3. Lviv Polytechnic National University, Lviv, Ukraine

    V. V. Vira

Authors
  1. О. P. Ostash
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  2. T. М. Labur
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  3. Yu. V. Holovatyuk
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  4. V. V. Vira
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  5. V. А. Koval
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  6. V. S. Shynkarenko
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  7. М. R. Yavorska
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Correspondence to О. P. Ostash.

Additional information

Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 55, No. 4, pp. 81–87, July–August, 2019.

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Ostash, О.P., Labur, T.М., Holovatyuk, Y.V. et al. Structural Strength of Welded Joints of Thermally Hardened Alloy of the Al–Cu–Mg System. Mater Sci 55, 548–554 (2020). https://doi.org/10.1007/s11003-020-00337-w

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  • DOI: https://doi.org/10.1007/s11003-020-00337-w

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