Work cat: Baker, B.A. Dissimilar welding of Si-Mo ductile iron exhaust manifold welded to stainless steel catalytic converter using NI ROD filler metal 44HT, 2000.

Welding international, 2003: v. 17, no. 4, p. 276 (Various welding processes, such as butt welding, steel cladding, overlay welding, etc. are currently available for welding of dissimilar metals. Welding additives with a composition differing from that of each base metal are normally used for welding of dissimilar metals, and the weld metal produced by welding obtains a composition through both base metals and welding additives being mixed at some specific ratio)

European Federation for Welding, Joining and Cutting WWW home page, Sept. 27, 2013 technical information/tech bulletins/materials & weldability/welding of dissimilar metals (When arc welding two dissimilar materials, there are a number of aspects that need to be addressed, in addition to those associated with welding similar materials. ... Firstly, from a practical viewpoint, it may not be possible to make a fusion weld if the melting points of the two materials are too different, as it is essential to have controlled melting on both sides of the joint simultaneously. Secondly, even if this criterion is met, it may not be possible to produce an adequate joint if the two materials are metallurgically incompatible. When two materials are metallurgically incompatible, it may be possible to make a satisfactory weld by addition of a suitable filler metal)

Key to metals WWW home page, Sept. 27, 2013 resource center/articles/welding and other joining properties/welding of dissimilar metals (There are many applications in which weldments are made from metals of different compositions. The same is true of a mechanical wear problem, a high-temperature situation, or other conditions in which different properties are required from different parts of the same weldment. This brings about the need for joining dissimilar metals. A successful weld between dissimilar metals is one that is as strong as the weaker of the two metals being joined, i.e., possessing sufficient tensile strength and ductility so that the joint will not fail in the weld. Such joints can be accomplished in a variety of different metals and by a number of the welding processes)

Applied surface science, May 15, 2012: p. 5914 (Heat and mass transfer in laser dissimilar welding of stainless steel and nickel. ... because of the difference in physical and chemical properties of two metals, such as thermal conductivity, heat capacity, thermal expansion coefficient, and melting temperature, many problems, such as partial penetration due to insufficient heat dissipation, brittle intermetallic compound or low melting point eutectics formation due to inappropriate solute dilution or heat treatment in joining dissimilar metals, may make the joint susceptible to cracks and failures. Choice of appropriate heat treatment temperature and composition of metal materials is an efficient way to solve these problems and obtain desired microstructure and mechanical properties, which requires appropriate laser welding parameters)