Dissimilar Metal Joining Between Aluminum Alloy And Hot-dip Aluminized Steel Sheet

摘要

Characteristics of joints between dissimilar metals, in particular aluminum alloy and a newly developed Hot-dip Aluminized Steel Sheet, were evaluated through experiments using resistance spot-welding, MIG welding and laser braze welding. The joining mechanisms of dissimilar metals were also studied from the aspect of the interface structures between aluminum alloy and steel. Special attention was paid to the formation of intermetallic compounds and to a method for controlling such compounds. This article also includes evaluation results on corrosion resistance of such joints in corrosive environments.