Friction Stir Welding (FSW) has been widely accepted technique to join titanium alloy, Ti-6Al-4V, to produce defect free sheets of it. The friction stir welding with other titanium alloys has a potential to improve the utilization and functional properties of titanium. The current study was undertaken to evaluate the performance of friction stir welded (FSW) different titanium joints. The impact of process parameters, mainly the spindle speed and feed rate on the strength of friction stir welded titanium alloy joints was studied. A combined approach of numerical and experimental was used to investigate the mechanical response of different titanium joints. This paper presents the numerical model that was developed to simulate mechanical behavior of FSW titanium joints. The numerical results were compared to experimentally determined behavior characteristics of the joints to gage the validity of the modeling approach. It was found that there was good agreement in the numerical and experimental results of the tensile behavior in titanium FSW joints. The optimum values of spindle speed and feed rate were found out for joining different titanium alloys.

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