Weldability of ductile cast iron using AISI-316L stainless steel ER rod

This paper analyzes the corrosion resistance and mechanical microstructural properties of a welded joint ductile cast iron using AISI316L stainless steel as filler material three different heat treatments: preheating at 250 450 ºC post-weld annealing treatment. The results show presence ledeburite interface between weld bead affected zone root pass, along with loss strength ductility when welding coupons are preheated. An does not eliminate leads to massive precipitation chromium carbides areas where dilution is higher. Corrosion rate was lower for annealed coupon, but in that case, increases due carbides.