Influence of welding speed on the fatigue of friction stir welds, and comparison with MIG and TIG

Numerical Study of the Mechanical Behavior and Fatigue in a Weld Bead by Friction Stir for a 6082-T6 Aluminum Alloy

“…12. The relationship between a, and ΔK is given by (2) and (3) for a given loading F amp : The propagation velocities of Crack in a 6082-T6 alloy in the different areas of the same weld (Nugget, TMAZ and HAZ) for a load ratio R = 0.1 for a specimen C (T). From the curves da/dN = ΔK (Fig.…”

“…Generally, FSW specimens have higher resistance than specimens welded using the Metal Inert Gas (MIG) and Tungsten Inert Gas (TIG) processes. [2] and [3], compared fatigue results of friction stir welds with data obtained for conventional arc-welding methods, namely, MIG-pulse and TIG processes in aluminum alloy (T6 and T4 conditions). [4,5] also compared the fatigue behaviour of joints performed by the traditional MIG welding process and by the FSW process, observing that FSW and MIG welded specimens had lower yield and ultimate stresses than the base material.…”

Review of State of Art of Friction Stir Welding

“…Fig.1.depicts principle of friction stir welding. Ericsson et al (2002) investigated that the fatigue strength of friction stir weld. It is also find the fatigue result for conventional arc welding method.…”

Some Observations on Microstructural Changes in Aluminium Based Alloys 7075 to 7075 Subjected to Friction Stir Welding

“…One advantage of FSW is that there is far lower heat input during the process compared with conventional welding methods such as TIG or MIG. Therefore, this solid-state process results in to minimal microstructural changes and better hardness and tensile tests than conventional welding [1][2][3]. The FSW process generates three distinct microstructural zones: the nugget zone (NZ), the thermomechanically affected zone (TMAZ) and the heat-affected zone (HAZ) [4].…”