BODY JOINED BY WELDING DISSIMILAR METAL MEMBERS MADE OF FERROUS ALLOY AND ALUMINUM ALLOY

摘要

PPROBLEM TO BE SOLVED: To provide a body joined by welding dissimilar metal members, which body can get merits, such as excellent joining strength and high productivity substantially equal to those of a body joined by welding similar property members, by completely eliminating disadvantages and problems in prior arts for joining a ferrous alloy member and an aluminum alloy member, such as conventional steel and 5000 series aluminum alloy. PSOLUTION: In the body joined by welding dissimilar metal members, the ferrous alloy member 1 and the aluminum alloy member 2 are welded by the heat input from the side of the ferrous alloy member 1. The body joined by welding the dissimilar metal members comprises a welded and solidified portion which has been continuously and integrally composed of a melted and solidified ferrous alloy portion B melted and solidified in the ferrous alloy member 1, a melted and solidified ferrous alloy portion A melted and solidified in the aluminum alloy member 2, and a melted and solidified aluminum alloy portion G melted and solidified in the aluminum alloy member 2, wherein the melted and solidified ferrous alloy portion A has a plurality of projections H on its surface. PCOPYRIGHT: (C)2007,JPO&INPIT