A friction stir welding (FSW) tool geometry, consisting of only a conical probe, is being investigated for application to closed contour welding, variable thickness welding, and open loop control welding. By use of a tapered retraction procedure and a ramped rotational velocity, a conical tool may facilitate material dissengagement with minimal surface defect in applications which do not permit...

A practical solution is friction stir welding (FSW) of heterogeneous alloys in industrial applications. The welded joint’s mechanical strength has been improved by combining two different (AA2219 and AA7068). focus this study was on stir-welded metals’ microhardness material properties. It possible to work with either hot or cold aluminium alloy, as it heat treatable. Revitalizing precipitation...

In this research, a method for implementing automatic seam-tracking for friction stir welding, referred to hear as WeaveTrack, is presented. In this extrumum-seeking control technique, the tool weaves back and forth during welding to maintain the location where axial force is greatest, which is shown to be the center of the weld. Results demonstrate the effectiveness of this technique in tracki...

In this work, the dissimilar joint of AA7003-T4 and 6060-T4 alloy has been produced by friction stir welding (FSW). The microstructure was examined by optical microscope (OM), electron back scattered diffraction (EBSD), transmission electron microscopy (TEM), and the mechanical properties of the joint were investigated. It is demonstrated that sound dissimilar joint can be produced through FSW....

The shear textures that develop in friction stir welds are reviewed and discussed. In all the materials examined, including face centred cubic (fcc), body centred cubic (bcc) and hexagonal close-packed (hcp) materials, friction stir welding produces a predominant shear texture with the close-packed directions aligned with the shear direction (SD) and the close-packed plane normal perpendicular ...

Abstract Background Friction Stir Welding (FSW) causes intense plastic deformation and consequent thermomechanical interactions resulting in a localised heterogeneous microstructure. To understand the weld mechanical behaviour, it is necessary to identify each microstructural sub-region weld. Objective Determine relationship between local microstructure behaviour of different regions FSW. Metho...

The permanent metal joining processes play a vital role in assembling the complex aluminium structures of aerospace, automotive, marine, and oil industries. invention friction stir welding (FSW) redefined mechanism to produce high-quality welds by eliminating consumption electrodes shielding gases, resulting economical processes. Research works still lack explore application FSW geometries. In ...