The Effect of Pin Shape and the Ratio of Tool Rotational Speed to Welding Speed on the Mechanical Properties

In the present study, the effect of two different pins which shaped in the triangular and straight helical threaded were associated with the ratio of the tool rotational speed to the welding speed on the mechanical properties of dissimilar friction stir welding (FSW) of EN AW 6082 and EN AW 5754. The responses of FSW process were investigated by the UTS, Ɛ% and hardness of weld joint. The results showed that the ratio of the tool rotational speed to the welding speed have a dominant effect on the weld joint strength.