Investigation of easy separation of A1050 aluminum / SS400 steel joints using foaming by applying a foaming agent to the joining interface

In recent years, joining technologies have been developed owing to multi-materials. From the viewpoint of recycling, separating joined materials is necessary when they are disposed. Our previous study steel and aluminum plates showed that easy separation by foaming area at time disposal effective. Still, it could not be applied a single plate. this study, we attempted use agent interface before FSW so Thereafter, welding surface was foamed heating. As result four-point bending tests, found fracture load required specimen can reduced compared with those nonporous specimens or only heated specimens.