Effect of Vibrations on Solidification Behavior and Mechanical Properties of Shielded Metal Arc Weld

The reliability and service performance of welded structure depend upon the mechanical strength of different welded joints. With an aim to enhance the weld properties, an auxiliary vibratory setup has been designed. In present investigation, a comparative study has been done in between conventional SMAW and vibratory SMAW process. Various combinations of base metal and filler metals are used for investigation. The microhardness and tensile tests were conducted for evaluation of mechanical properties. The results show that with the application of the vibratory treatment, the values of hardness, yield strength and ultimate tensile strength (UTS) increased. The microstructure study shows that, as compared to the conventional welding process, the vibration welding has fine-grain structure. The study also discusses the solidification behavior during vibratory welding process. Vibratory welding techniques used in the investigation have less investment, more convenient operation, less pollution, and shorter manufacturing period.