抄録
Due to multi-material car body designs that have been utilized in recent years to reduce vehicle body
weight, joining dissimilar materials is becoming crucial issues. We developed a new dissimilar laser
lap-joining method using a cold-sprayed interlayer. In this procedure, we sprayed a steel coating onto an
aluminum surface, that was laser welded to a sheet of steel. This paper reviews the recent progress of
dissimilar metal joining technologies for automobiles and reports the welding phenomena in our joining
method as well as its joint characteristics.
