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Effect of transverse arc oscillation on morphology, dilution and microstructural aspects of weld beads produced with short-circuiting transfer in GMAW

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Abstract

This work investigates the effects of transverse arc oscillation in gas metal arc welding (GMAW) with metal transfer by short circuit using the AISI 316L alloy as the base metal. For this purpose, the influence of the oscillation frequency (f) and the wire-feed speed (Va) at three levels was analyzed, keeping a constant triangular weaving pattern and a fixed welding speed. The results show that an increase in oscillation frequency leads to an increase in the resulting welding speed, resulting in lower welding energy. Regarding weld bead morphology, the transverse arc oscillation reduced the reinforcement, the wetting angle, the penetration and the convexity index (CI < 30%). On the other hand, higher dilution values were obtained. Finally, a clear microstructure refinement tendency became evident when applying the weaving technique.

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Acknowledgements

The authors would like to thank the IMC company for the assistance, the LTS—Laboratory of Welding Technology—UFSC and the LPS—Laboratory of Welding Processes—UA.

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Authors and Affiliations

  1. Departamento de Ingeniería Mecánica, Universidad de Antofagasta, Antofagasta, Chile

    Mauricio Lara, Víctor Vergara Díaz & Manuel Camus

  2. Centro Tecnológico de Joinville, Universidade Federal de Santa Catarina, Campus Joinville, Joinville, SC, Brazil

    Tiago Vieira Da Cunha

Authors
  1. Mauricio Lara
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  2. Víctor Vergara Díaz
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  3. Manuel Camus
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  4. Tiago Vieira Da Cunha
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Corresponding author

Correspondence to Víctor Vergara Díaz.

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Technical Editor: Izabel Fernanda Machado.

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Lara, M., Díaz, V.V., Camus, M. et al. Effect of transverse arc oscillation on morphology, dilution and microstructural aspects of weld beads produced with short-circuiting transfer in GMAW. J Braz. Soc. Mech. Sci. Eng. 42, 449 (2020). https://doi.org/10.1007/s40430-020-02533-w

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  • DOI: https://doi.org/10.1007/s40430-020-02533-w

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