Document Type : Original Article
Production Engineering, Faculty of Engineering, University of menofia, material Engineering
Production Engineering, Faculty of Engineering, University of menofia
Continous improvement in friction sttir welding process (FSW( is still growing to improve the process capabilites and overcome some certain drawback. Low welding speeds, high welding loads, and high tourqe needs are the main limitation of this process Appling ultrasonic vibration is one of the versatile approach that was proposed to tackle this issue. In this paper a comparative study between conventional friction store welding (FSW) and ultrasonic assisted friction store welding process (uafsw) was conducted. The objective is to evaluate quantities and wualtivity the influnes of ultrasonic vibration waves on the welding surface quality, tensile stregh , microstraacture and welding formation. The results have demonstrated that ultrasonic vibration waves caus grain refinement action at the stirring zone (SZ) as well as miserable role in enhanceing the mechanical properties and elimmung specific welding defects especially at high welding speeds. However, no profound effect was found for ultrasonic waves on the grain size in the thermomechanical effected zone (TMAZ( nor the heat affected zone (HAZ).