EFFECT OF TRANSVERSE VIBRATIONS ON THE HARDNESS OF ALUMINUM 5052 H32 ALLOY WELDMENTS

Vibratory welding is a non-thermal method to reduce the residual stresses. In vibratory welding, mechanical mode of vibrations is imparted to the specimen during welding. This paper presents influence of mechanical vibrations (voltage input to the vibromotor) on the hardness of aluminium alloy weldments. Vibratory Tungsten inert gas welding is applied to join alloy weldments. In this hardness values of aluminium alloy weldments are analyzed for different vibromotor voltage inputs keeping other parameters constant i.e., flow rate of gas, speed of welding, weld current and the vibration time of the specimen. It is observed that hardness of aluminium alloy weldments is increasing with voltage input to the vibromotor from 50 V to 160 V. it is also noticed that the hardness of aluminium alloy weldment is decreasing when the voltage input to the vibromotor is more than 160V.