Abstract :
Friction stir welding (FSW) is a welding technology that is a solid state
joining process tused to connect an aluminum material with low weldability. FSW
process utilizes the rotation of the rubbing tools of two metal plates to join.
Aluminum 2024 T3 with a thickness of 4 mm was joined using the FSW process with
feedrate variations of 13mm/minute, 18mm/minute and 25 mm/minute, spindle
rotation speed of 910 rpm and pin depth of 3 mm. The tests performed were tensile
strength, hardness and microstructure on each variation.
The results showed that the highest tensile strength and strain occurred in the
welding with a feedrate of 25 mm/minute for 221,51 MPa and 3,60. The lowest tensile
strength and strain then occured during welding with a feedrate of 13 mm/minute for
198,63 MPa and 2,26. The highest hardness value in the nugget area was obtained in
welding with a feedrate of 25 mm/minute for 137 VHN and the lowest hardness value
was generated in welding with a feedrate of 13 mm/minute for 105 VHN. The results
of microstructure photographs in the nugget zone and TMAZ (Thermomecanically
Affected Zone)areas were changed according tothe feedrate.