Study on arc and laser powers in the hybrid welding of AA5754 Al-alloy

G. Casalino, M. Mortello, P. Leo, K.Y. Benyounis, A.G. Olabi

Research output: Contribution to journalArticle

Abstract

In this paper a new generation of fiber laser assisted by a MIG source was used to weld AA5754-H111 aluminum alloy in 3 mm thick butt configuration. The effects of laser and arc powers on the weld geometry and properties were studied. Weld geometry and porosity were measured. The microstructure was investigated by optical microscope and Vickers micro-hardness was taken. The residual stress close to the heat affected zone was measured by the incremental hole-drilling method. Eventually, the tensile test was conducted in order to compare the mechanical properties of the weld with those of the parent metal. For the first time the sensitiveness of the hybrid welding of the 5754 aluminum alloy to the arc and laser powers was demonstrated. Higher laser power favored the stability of the process and provided good structural and geometrical properties of the weld. Further investigation can be performed in order to optimize the weld soundness and the energy efficiency of hybrid welding an aluminum alloy using a fiber laser.
Original languageEnglish
Pages (from-to)191-198
Number of pages8
JournalMaterials & Design
Volume61
DOIs
Publication statusPublished - Sep 2014

Fingerprint

Welding
Welds
Lasers
Aluminum alloys
Fiber lasers
Geometry
High power lasers
Heat affected zone
Microhardness
Energy efficiency
Residual stresses
Drilling
Microscopes
Porosity
Metals
Mechanical properties
Microstructure

Keywords

  • Hybrid welding
  • Fiber laser
  • Aluminum alloy
  • Arc and laser powers

Cite this

Casalino, G., Mortello, M., Leo, P., Benyounis, K. Y., & Olabi, A. G. (2014). Study on arc and laser powers in the hybrid welding of AA5754 Al-alloy. Materials & Design, 61, 191-198. https://doi.org/10.1016/j.matdes.2014.04.060
Casalino, G. ; Mortello, M. ; Leo, P. ; Benyounis, K.Y. ; Olabi, A.G. / Study on arc and laser powers in the hybrid welding of AA5754 Al-alloy. In: Materials & Design. 2014 ; Vol. 61. pp. 191-198.
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Casalino, G, Mortello, M, Leo, P, Benyounis, KY & Olabi, AG 2014, 'Study on arc and laser powers in the hybrid welding of AA5754 Al-alloy' Materials & Design, vol. 61, pp. 191-198. https://doi.org/10.1016/j.matdes.2014.04.060

Study on arc and laser powers in the hybrid welding of AA5754 Al-alloy. / Casalino, G.; Mortello, M.; Leo, P.; Benyounis, K.Y.; Olabi, A.G.

In: Materials & Design, Vol. 61, 09.2014, p. 191-198.

Research output: Contribution to journalArticle

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AU - Leo, P.

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AB - In this paper a new generation of fiber laser assisted by a MIG source was used to weld AA5754-H111 aluminum alloy in 3 mm thick butt configuration. The effects of laser and arc powers on the weld geometry and properties were studied. Weld geometry and porosity were measured. The microstructure was investigated by optical microscope and Vickers micro-hardness was taken. The residual stress close to the heat affected zone was measured by the incremental hole-drilling method. Eventually, the tensile test was conducted in order to compare the mechanical properties of the weld with those of the parent metal. For the first time the sensitiveness of the hybrid welding of the 5754 aluminum alloy to the arc and laser powers was demonstrated. Higher laser power favored the stability of the process and provided good structural and geometrical properties of the weld. Further investigation can be performed in order to optimize the weld soundness and the energy efficiency of hybrid welding an aluminum alloy using a fiber laser.

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KW - Aluminum alloy

KW - Arc and laser powers

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