MECHANICAL PROPERTIES AND WELDING POWER OF FRICTION STIRRED AA2024-T35 JOINTS

Document Type : Original Article

Author

Suez Canaf University, Faculty of Engineering, 42523 Port Said, Egypt

Abstract

This study is concerned with the effect of fiction stir welding parameters on the mechanical
properties and the consumed welding power for AA2024-T35 joints. AA2024-T35 was friction stir
welded at different welding speeds (16, 40 and 80 mmlmin), rotation speed (900, 1120 and 1400
rpm) and two tool pmfiles (triangular and square). The welding power was measured and
evaluated with two previously established models [1,2]. The tool profile as well as the welding
speed showed significant effect on the microstructure especially at lower welding speeds. The
increase of the welding speed improves the mechanical properties for both tool profiles whereas it
has an insignificant effect on the welding power. The square profile produced better mechanical
properties and consumed more power, at 40 mmlmin, than the triangular one. Also, the welding
speed showed a weak effect on the welding power, hut the need of power increased with the
increase of the rotation speed. The measured power was found to he in agreement with the
computed one through a theoretical work established by Heurtier et al.

Keywords