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Dissimilar Joining of Titanium to Aluminum Using Friction Stir Welding Process and Weld Joint Characterization by Ambadas Basude; Adepu Kumar; George Rajasingh; Mugada Krishna Kishore is a Engineering article available to read on EtoBox.

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## Abstract The present investigation studies the solid-state joining of difficult-to-weld aerospace materials such as titanium alloy (Ti6Al4V, ELI) and pure aluminum. Due to the wide difference in thermo-mechanical properties, it was a challenging task to establish a dissimilar metal joint. The friction stir welding process with a conically shaped tungsten carbide tool was used in the present investigation to join the dissimilar titanium alloy and aluminum in the lap joint configuration. After a series of pilot experiments, the optimum test conditions to produce the defect-free joint are spindle speed of 1200 rpm, feed rate of 40 mm min^−1^, tool tilt angle of 1°, and 1 mm tool offset towards the aluminum side. The results show that a good joint was achieved with a maximum joint strength of 89 MPa. The dissimilar joints are characterized by macrostructure, microstructure, microhardness, and scanning electron microscopic analysis.

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Author

Ambadas Basude; Adepu Kumar; George Rajasingh; Mugada Krishna Kishore

Publisher

Walter de Gruyter GmbH

Published

2023

Language

EN

Field

Engineering (Physical Sciences)