Experimental investigation on corrosion behaviour of dissimilar weldment (AISI 4130 and 4140) and (INCONEL 625 and 718)

In this article welding of two dissimilar metals will be carried out, why do we select dissimilar welding because the usage of the dissimilar metals is increasing day by day mainly in the heat transfer core places. So welding of dissimilar metals becomes unavoidable, which is normally a challenging process and the same is addressed by number of researchers over the period of time. Here the discussion is about the welding process and the impact due to high temperature of welding process on the strength of the weld bead. The high temperature induces corrosion which is undesirable. In this research we are focused to identify the welding parameter which induces the least corrosion.