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Fatigue Study of Friction Stir Welded and TIG Welded AA 6061 Alloy Similar Joints

Akshansh Mishra, Adarsh Tiwari, Chandan Kumar, Nitin Kumar Dubey, Atul Tiwari

Abstract


In this study, Al-Mg-Si alloy plates in 4 mm thickness that are particularly used for aerospace and automotive industries were welded using Tungsten Inert Gas (TIG) welding and Friction Stir Welding (FSW) methods as similar joints with one side pass with parameters of varying tool rotation, weld speed and 2.3 degree tool tilt angle. Tensile tests results showed high yield stress values for FSW joints. Micro Vickers hardness test gave the required result for FSW welded and TIG welded Al-Mg-Si alloy plates. While fatigue test results showed all similar welded joints have fatigue strength close to each other.


Keywords


Weld zones, friction stir welding, metallurgical test, mechanical test, fatigue analysis

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