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Simulation and Experimental Studies on Arc Efficiency and Mechanical Characterization for GTA-Welded Ti–6Al–4V Sheets

  • Research Article - Mechanical Engineering
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Abstract

Gas tungsten arc (GTA) welding process is the best choice for joining Ti–6Al–4V (grade 5) material, with economical cost. To support the above aim, two simulation works are studied in this research. First work focuses on the simulation of GTA welding process. The second work focuses on the simulation of the tensile and cupping test. Initially, GTA welding parameters such as welding current (115–135 A) and welding speed (250–450 mm/min) are taken for conducting bead on plate (BoP) trials. From these BoP trails, bead profiles are measured to build a moving heat source model in COMSOL. The arc efficiency (η) is focused on this welding simulation. Using Abaqus software, tensile and cupping test analysis is performed to predict the fracture location and elongation. The bead profile at arc efficiency of 60% showed a better match with the experimental work. By implementing the temperature distribution analysis, the bright silver colour bead is achieved in experimental work. The butt joint showed comparable strength (95.9%) to the base metal; also the simulation error is not exceeded by 10%. The crack location predicted from the numerical study highly coincides with the experimental work for the cupping test.

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Authors and Affiliations

  1. Department of Mechanical Engineering, National Institute of Technology, Patna, Bihar, 800 005, India

    A. Karpagaraj & N. Rajesh Kumar

  2. Department of Mechanical Engineering, National Institute of Technology, Puducherry, Karaikal, Tamil Nadu, 609 609, India

    K. Sankaranarayanasamy

  3. Department of Mechanical Engineering, National Institute of Technology, Tiruchirappalli, Tiruchirappalli, Tamil Nadu, 620 015, India

    N. Siva Shanmugam

  4. Department of Materials System Engineering, Pukyong National University, Busan, 48547, Republic of Korea

    Muralimohan Cheepu

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Karpagaraj, A., Rajesh Kumar, N., Sankaranarayanasamy, K. et al. Simulation and Experimental Studies on Arc Efficiency and Mechanical Characterization for GTA-Welded Ti–6Al–4V Sheets. Arab J Sci Eng 45, 9639–9650 (2020). https://doi.org/10.1007/s13369-020-04876-x

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  • DOI: https://doi.org/10.1007/s13369-020-04876-x

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