WELDED JOINT OF ALUMINUM PLATE OR ALUMINUM ALLOY PLATE AND STEEL PLATE, AND METHOD FOR WELDING ALUMINUM PLATE OR ALUMINUM ALLOY PLATE TO STEEL PLATE

摘要

PROBLEM TO BE SOLVED: To provide a welded joint that has few constraints such as applicable conditions of spot welding and is superior in general-purpose properties, and also that does not deteriorate reliability of welding and has high joint strength.SOLUTION: The welded joint is employed by welding an Al plate 1 to a steel plate 2 by electrical resistance welding, while interposing a reactive layer 5 containing V at the ratio of 0.1-5 mass%, Fe and Al between the Al plate 1 and the steel plate 2.