PIN DIAMETER EFFECT ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF DISSIMILAR FRICTION STIR LAP WELDING ALUMINUM ALLOY 6061-T6 TO DUAL PHASE STEEL
Keywords:Friction stir welding, Dissimilar metals, Aluminum alloy, Dual phase steel, Pin
In this work, the effect of the pin diameter on the microstructure, hardness, and strength of friction stir welded 6061-T6 aluminum alloy to dual phase steel has been investigated. Microhardness measurements, tensile shear tests, optical microscopy, scanning electron microscopy with energy dispersive spectroscope (EDS), and X-ray diffraction were the main techniques used. The results showed that friction stir welding can be used for the joining of dissimilar 6061-T6 aluminum alloy to dual phase steel. We have found that the maximum strength is obtained after welding with the highest pin diameter.