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Flexural Strength Improvement of Welded Joints Prepared by Vibratory Welding Process

Author

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  • P. Govinda Rao

    (GMR Institute of Technology, Rajam, India)

  • P. Srinivasa Rao

    (Department of Mechanical Engineering, Centurion University of Technology and Management, Paralakhemundi, India)

  • A. Gopala Krishna

    (Department of Mechanical Engineering, Jawaharlal Nehru Technological University, Kakinada, India)

Abstract

Vibration techniques have been used in welding for improving the mechanical properties of metals in the last few decades. In the present work, vibratory setup has been used for inducing mechanical vibrations into the weld pool during welding. The designed vibratory setup produces the required frequency with the amplitude and acceleration in terms of voltages. An increase in the flexural strength of the weld pieces in to the heat affected zone (HAZ) has been observed. The increase in mechanical properties is attributed to, as the weld pool solidifies, grains are not only limited in size but also dendrites are broken before they grow large in size. Refined microstructure has been observed. The above mechanism is responsible for the improvement in flexural strength of weld pieces welded with vibratory setup compared to without vibration during welding.

Suggested Citation

  • P. Govinda Rao & P. Srinivasa Rao & A. Gopala Krishna, 2015. "Flexural Strength Improvement of Welded Joints Prepared by Vibratory Welding Process," International Journal of Manufacturing, Materials, and Mechanical Engineering (IJMMME), IGI Global, vol. 5(4), pages 1-16, October.
    • Handle: RePEc:igg:jmmme0:v:5:y:2015:i:4:p:1-16
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