Abstract AA2219 is a precipitation hardened aluminum alloy. It is mainly employed in manufacture of important parts like structures on aircrafts and automobile parts. It normally has 2.5 to 4.5 percent of copper in it which makes it stronger and enhances its level of corrosion resistance. Nonetheless, AA2219 is hard to fuse weld in the standard way of using fusion welding processes. Consequently, fusion welding techniques are generally used to join this alloy, but these methods also possess some limitations such as, being expensive, special equipment’s are required and hard geometries cannot be welded. In the research paper used, the gas metal arc welding method was relied upon to weld the AA2219 alloy in both butt and the lap joint to determine whether it would be able to carry that load. The resulting observations after the experimentation demonstrated that there was much higher load-carrying capacity in the lap joint configuration than there was in the butt joint. This enhanced strength is credited to the enhanced effective thickness due to weld region and decreased softening that is witnessed in the lap joint in comparison with butt joint.
Dhiravidamani et al. (Sun,) studied this question.