Abstract
Autogenous gas tungsten arc welding to produce a dissimilar weld comprising austenitic and ferritic stainless steels was attempted. Defect free welds with over matching mechanical properties could be accomplished with a resultant weld metal consisting of a dual phase structure (ferrite and austenite). The pitting corrosion behaviour of the weld metal/heat affected zone, assessed as a 'composite zone', was found to be inferior to the rest of the regions in this dissimilar weldment, in both the acidic and neutral chloride solutions of different concentrations.
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