Cracking Susceptibility and Joint Property Study of the 6061 Aluminum
By means of FISICO test, the cracking susceptibility of the 6061 aluminum was investigated, the experimental results showed that it is prone to form crater crack under restraint condition comparison with that of the 3003 aluminum. So the crater fill-up technology need to be employed accordingly during the field welding. The strength, elongation percentage and hardness of the as welded joint was lowered 29.7%40%42% respectively, the former two is recovered to 73.4% and 81.7% of the base material respectively after natural aging 30days. This indicate that the natural aging treatment can remedy part of the property loss during the welding.
Yafang Han et al.
X. H. Xue et al., "Cracking Susceptibility and Joint Property Study of the 6061 Aluminum", Materials Science Forum, Vols. 546-549, pp. 911-916, 2007