The effect of elevated temperature on flash-welded aluminum-copper joints

BOTH ALUMINUM and copper have high conductivity and hence are excellently suited for use as electric conductors. Since both metals are widely used, connections between them frequently have to be made. The most common type of connection is the bolted joint, as when an aluminum bus bar is bolted to a copper stud. Although this type of connection is satisfactory, frequently a more efficient and less bulky connection, with better appearance, can be made by flash welding, as illustrated in Fig. 1.