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A review on techniques for improving the mechanical properties of fusion welded joints

This paper presents the effect of Post Weld Heat Treatment (PWHT), pulsed current welding, hybrid welding and vibratory assisted welding in the weld quality, residual stresses and mechanical properties of welded joints. | A review on techniques for improving the mechanical properties of fusion welded joints Engineering Solid Mechanics 2017 213-224 Contents lists available at GrowingScience Engineering Solid Mechanics homepage www.GrowingScience.com esm A review on techniques for improving the mechanical properties of fusion welded joints J. Kalpanaa P. Srinivasa Raob and P. Govinda Raoc a Department of Mechanical Engineering SSCE Chilakapalem Andhra Pradesh India b Department of Mechanical Engineering Centurion University Parlakhemundi Odisha India c Department of Mechanical Engineering GMRIT Rajam Andhra Pradesh India A R T I C L EI N F O ABSTRACT Article history This paper presents the effect of Post Weld Heat Treatment PWHT pulsed current welding Received 6 June 2017 hybrid welding and vibratory assisted welding in the weld quality residual stresses and Accepted 12 September 2017 mechanical properties of welded joints. At last vibratory assisted welding has been suggested Available online to enhance the mechanical properties of welded joints by overcoming the drawbacks in the 12 September 2017 Keywords above stated techniques. Past results showed that the welded test specimens under vibratory Post Weld Heat treatment conditions exhibited improvements in mechanical properties than the arc welding without PWHT vibrations. Finally some literature gaps are clearly identified and these gaps could help the Pulsed current welding future generation researchers to do work in the new direction. Hybrid welding Vibratory assisted welding and mechanical properties 2017 Growing Science Ltd. All rights reserved. 1. Introduction Welding provides a permanent joint but it affects the metallurgy of the components. During the welding process due to the intense heat input the regions near the weld undergo severe thermal cycles thereby generating inhomogeneous plastic deformation in the weldment. Due to this strength of the weld joint is reduced. To overcome this different methods are used to .