Modifiing Effect of Zirconia Nanoparticles during Electric Arc Welding
- Authors: Fominykh M.V.1, Denisova E.I.1, Berezovskii A.V.1, Finkel’shtein A.B.1, Kartashev V.V.1
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Affiliations:
- Ural Federal University,
- Issue: Vol 2018, No 8 (2018)
- Pages: 783-786
- Section: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/172088
- DOI: https://doi.org/10.1134/S0036029518080050
- ID: 172088
Cite item
Abstract
The structure of the weld metal after welding using a flux-cored wire with the addition of 0.3% zirconia flaky nanoparticles is studied. The weld consists of an acicular ferrite. This finding can indicate that the dissociation of zirconia in an electric arc is not an obstacle to a modifying effect, which manifests itself in both the interaction of zirconium with oxygen and the surface activity of zirconium in an iron-based solidifying melt. Thus, zirconia is a modifier of both the first and second kinds for the solidifying weld metal. Excess oxygen is likely to form individual pores less than 1 μm in diameter in the weld metal; however, they only wealy affect the mechanical properties of the welded joint. These results will be used to develop electrode materials for welding pipe steels.
About the authors
M. V. Fominykh
Ural Federal University,
Email: avinkel@mail.ru
Russian Federation, Yekaterinburg, 620002
E. I. Denisova
Ural Federal University,
Email: avinkel@mail.ru
Russian Federation, Yekaterinburg, 620002
A. V. Berezovskii
Ural Federal University,
Email: avinkel@mail.ru
Russian Federation, Yekaterinburg, 620002
A. B. Finkel’shtein
Ural Federal University,
Author for correspondence.
Email: avinkel@mail.ru
Russian Federation, Yekaterinburg, 620002
V. V. Kartashev
Ural Federal University,
Email: avinkel@mail.ru
Russian Federation, Yekaterinburg, 620002