Effect of Welding Process Parameters on Microstructures of Duplex Stainless Steel Clad Metals Deposited by FCAW

Weld cladding is a process of depositing a thick layer of a metal surface to a carbon steel base metal for the purpose of providing a corrosion-resistant surface when that surface is to be exposed to a corrosive environment. In order to maintain the required corrosion resistance and mechanical properties of the claddings, controlling the microstructure is essential. This paper focuses on an experimental study of duplex stainless steel cladding of low carbon structural steel deposited by flux cored arc welding process. Colour metallographic technique was used to study the microstructure of the clad layer cladded under two different heat input conditions with the help of optical microscope.