Effect of Welding Parameters on Properties of 5052 Al Friction Stir Spot Welds

Effect of tool design and process parameters on properties of Al alloy 6016 friction stir spot welds

“…However, Lathabai et al (2006) reported that a higher tool rotation speed of 3000 rpm was optimum for Al alloy 6060-T5 and penetration depth had significant influence on the tensile shear strength. On the other hand, Freeney et al (2006) and Mitlin et al (2006) reported that increasing penetration depth had no influence on the failure load. Tran et al (2009) showed that failure load of dissimilar aluminum alloy spot friction welds increased with processing time as a result of enlarged weld diameter.…”

“…Sakano et al (2001) and Arul et al (2008) showed that the lap shear load first increased, and then decreased as the tool rotation speed increased. Freeney et al (2006) and Tozaki et al (2007) reported that higher weld strength can be attributed to a larger stir zone size attained by lowering tool rotation speed. However, Lathabai et al (2006) reported that a higher tool rotation speed of 3000 rpm was optimum for Al alloy 6060-T5 and penetration depth had significant influence on the tensile shear strength.…”

“…The inter-mixing of the plasticized material and forging pressure applied by the tool shoulder result in the formation of a solid bond region (Freeney et al, 2006).…”

FEM model for the thermo-mechanical characterization of friction stir spot welded joints

“…In some researches it was observed that the lap shear load first increases, and then decreases for increasing values of the tool rotation speed [13]. Other Authors observed that higher weld strength can be related to a wider stir zone size, obtained by limiting the tool rotation speed [14,15]. In [16] it was observed that the shear resistance of the weld increases for decreasing tool rotating speed and for increasing tool plunge rate.…”

Fatigue Behaviour of Friction Stir Joined Aluminium Alloy NG5754 and AA6111 Sheets

“…However, as an emerging technology, the mechanical behaviour of SFJ joints has not been well understood, in particular the effect of the process variables on the fatigue behaviour of such joints. Freeney et al [8] reported the effect of the rotation rate and plunge depth on the static behaviour of spot friction stir joined 5052 aluminium alloy. The present authors reported the effect of paint bake cycle on static behaviour of such joints [9].…”