an improved method for resistance welding two metallic articles , made of dissimilar metals which form brittle intermetallic compounds when melted together . a first one of the metallic articles is provided with a tapered , flat - topped projection which is pressed against the other metallic article . the first article preferably is composed of the metal most difficult to melt , as determined by the four parameters of melting point , electrical resistance , heat conductivity and specific heat . the projection is formed with a predetermined relation between height , top width , and angle of taper such that a preselected extremely high welding current passed for a very short time will establish a maximum temperature near the top of the projection sufficient to melt the contacting surfaces of the two metallic articles and a temperature gradient such that an intermediate portion of the projection becomes markedly plastic while the adjacent base portion of the projection remains undeformable under extremely high welding pressure . impurities and intermetallic compounds in the molten metal at the top of the projection are squeezed out to the periphery of the surfaces to be welded , and the weld joint is made between plastic but unmelted metal of the projection and the other article .