Hot cracking in Al–Mg–Si alloy laser welding – operating parameters and their effects

Investigation of weld defects in friction-stir welding and fusion welding of aluminium alloys

“…6) and the fastening system of the welding components (Chang et al 2010). Studies (Hu and Richardson 2004;Cicala et al 2005) have shown that cracking in the weld fusion zone increases with increasing weld transverse speeds. CO 2 laser, Nd:YAG laser and disk or fibre laser welding exhibit different behaviour and different plasma plume effects on weld penetration (Katayama et al 2010).…”

Étude sur la fissuration à chaud de l'alliage 6061 lors du soudage par procédé hybride laser-GMAW /

“…Par conséquent, le matériau peut ou non supporter cette déformation selon l'ampleur des contraintes, en tenant compte de ses propriétés de ductilité, de résistance mécanique et de rigidité [5,68]. La figure crevasse [8]. Cette analyse permet aussi de distinguer les trois interfaces possibles à observer.…”

Effect of filler metal feed rate and composition on microstructure and mechanical properties of fibre laser welded AA 2024-T3

“…Hot cracking sensitivity of the 2024 alloy can be reduced by controlling the solidification process during welding by optimization of welding parameters and avoiding the crack sensitive composition in the weld metal through the use of a suitable filler metal with different chemistry and a lower solidification point than that of the base metal [11]. It is possible to reduce the crack sensitivity by introducing minor eutectic alloy such as Al-Si via the addition of a crack resistant filler metal of the right composition, usually from the 4xxx series alloys.…”