Friction Stir Welding of Aluminum 6082 with Mild Steel and Its Joint Analyses

Sajan, S G and Dey, Suhash Ranjan (2012) Friction Stir Welding of Aluminum 6082 with Mild Steel and Its Joint Analyses. Masters thesis, Indian Institute of Technology Hyderabad.

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Abstract

Energy-saving and reduction in CO2 emission are the two important challenging issues that must be resolved in the coming future. Introducing aluminum components in a standard steel car body or in the hulls of ship brings the reduction in weight of vehicles, thereby reducing the emission. In this research study, Aluminum 6082 alloy and mild steel were tried to join together (weld) by an eco-friendly and energy efficient technology named as Friction Stir Welding (FSW), which is far advantageous than the conventional fusion welding especially in the case of joining dissimilar materials. As this is a solid state welding process, most of the defects occurring in the molten state of the material could be completely eliminated. Also, welding takes place at low temperature (below the melting point of the material) due to which there is less chance of intermetallics formation at the heat affected region that will eventually degrade the mechanical properties of the weld.

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