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Effect of weld parameters on mechanical properties and tensile behavior of tungsten inert gas welded AW6082-T6 aluminium alloy

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Abstract

The effect of different welding parameters on the mechanical properties and tensile behavior of tungsten inert gas (TIG) welded joints was analyzed. Four different groove angles were chosen, 60°, 70°, 80° and 90°, to ascertain the tendency of microstructure formation and quality of the weld. Mechanical properties were assessed in the terms of Vickers HV1 hardness. Microanalysis of test samples produced using different current 165 A, 180 A, 200 A with same groove angle of 90° was done in fusion, partially melted, and heat affected zone; all the images showed good penetration and clear transition from one to following zone. The transverse tensile tests were accomplished on the welded joints to evaluate influence of welding parameters and groove geometry to the joint tensile strength and its behavior during exploitation. It was verified that the tensile strength of the welds is closely related to the welding parameters. The chosen 180 A welding current ensured highest tensile strength of test samples; the same as proper selection of groove angle (90°) provides good fusion and high quality of major welds. The results revealed that the weld penetration depends on welding current.

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Authors and Affiliations

  1. Faculty of Mechanical Engineering and Design, Kaunas University of Technology, 51424, Kaunas, Lithuania

    Saulius Baskutis, Jolanta Baskutiene, Regita Bendikiene & Antanas Ciuplys

Authors
  1. Saulius Baskutis
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  2. Jolanta Baskutiene
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  3. Regita Bendikiene
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  4. Antanas Ciuplys
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Corresponding author

Correspondence to Regita Bendikiene.

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Recommended by Associate Editor Young Whan Park

Saulius Baskutis is an Associate Professor in Production Engineering at Kaunas University of Technology. His principal interests are in welding processes, measurements of mechanical properties of materials, and district heating supply and distribution systems.

Regita Bendikiene has been working in the field of steel surface strengthening by microalloying since 1994. In 1999, she defended her Ph.D. thesis on Digital Metallographic Evaluation of Carbide Phase Morphology. She published more than 60 scientific publications. She attended professional development internships four times in Sweden, France and Estonia, and her short internship is foreseen at Stavanger University in 2019. She is the Chair of Technical Committee of Lithuanian Standards Board; the Member of Mechanical Engineering field Ph.D. committee; the Chairman of International Conference Materials Engineering.

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Baskutis, S., Baskutiene, J., Bendikiene, R. et al. Effect of weld parameters on mechanical properties and tensile behavior of tungsten inert gas welded AW6082-T6 aluminium alloy. J Mech Sci Technol 33, 765–772 (2019). https://doi.org/10.1007/s12206-019-0131-6

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  • DOI: https://doi.org/10.1007/s12206-019-0131-6

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