Joining of Metal Plates at Edges by High-Speed Sliding with Compression

A new impact joining method of metal plates was demonstrated. The plate edges to be joined slides at a high-speed with increasing compressive force, which gives rise to a large plastic deformation for the material near the sliding interface. The test materials were a pure copper C1100-1/4H and an aluminum alloy A6061-T6 with a thickness of 5 mm. The similar material or dissimilar ones were combined. The objective is to show the possibility of this method. The energy source for the impact joining was the drop-weight of about 90 kg, whose impact velocity or the initial sliding speed was 10 m/s. Tensile test of the joined plate was performed, where the force was applied perpendicular to the joint boundary. The joining was not achieved for the full thickness. The joint efficiency was evaluated along the joint boundary for the initial thickness of the plate. Hence it was somewhat underestimated. The joint efficiency of C1100 - A6061 joining was 50% or more over about 70% part of the joint boundary. Since the A6061 material was adhered over the surface of C1100 at the fractured surface, the boundary is quite strong. The joint efficiency of C1100 - C1100 or A6061 - A6061 joining was about 70% except for the end portions of the joined plate.