Modeling and optimization of tensile shear strength of Titanium/Aluminum dissimilar welded component

Abstract

Titanium was successfully welded to Aluminum using laser welding. Laser welding parameters ranges combinations were experimentally determined using Taguchi approach with the objective of producing welded joint with acceptable welding profile and maximizing the tensile shear strength. Tensile shear strength of dissimilar Al/Ti was evaluated as a response function of the selected laser welding parameters and statistical model was developed to describe it. The result indicates that the developed model can predict the responses satisfactorily. Tensile strength of the joints was found to be same as Al base metal. Furthermore the microstructure and microhardness of the joint have been studied. © 2009 IOP Publishing Ltd.