Experimental study of the ultrasonic welding effects in the metal joint microstructure

Abstract

In this article will present the technology parameters effects in the case of thin copper sheets joining with agree of the material science theory and metalworking rules-based executed experiments. Known the dislocation theory of the ultrasound energy influence in the case of the metalworking. The ultrasonic welding technology uses the ultrasound effect for increase the metal formability because the joint established by high-frequency vibration and pressing. The ultrasonic welding is a solid-state welding technology in which detectable the high-frequency vibration caused friction effected warming in the joint and the heat-affected zone. The established heat accompanied by plastic deformation can cause Changement in the joint microstructure as a function of the established heat, the heat transfer coefficient and the plastic deformation degree of the used metal. The relationship is founded between the experimented metal thin sheets welded joint mechanical properties, microstructure and the welding parameters. The joint mechanical and microstructural properties experimented by Vickers hardness test and visual inspections.