Abstract

Cladding is a popular surfacing process in which deposition of corrosion-resistant material on corrosion-prone structural steel is done to enhance the service life of different devices even under severe corroding atmosphere. Flux-cored arc welding is a successful process adopted for cladding. Duplex stainless steel is becoming an efficient cladding material in chloride atmosphere. Heat input is an important parameter for cladding process. In the present experiment, three sets of heat input are chosen by changing welding current and welding voltage, keeping voltage constant. Each set of heat input is constructed by three levels of current and voltage. Duplex stainless steel cladding is performed in a single layer with 50% overlap on low-alloy steel by flux-cored arc welding using 100% CO2 as shielding gas. Metallography tests, corrosion test along with evaluation of chemical composition of clad samples have been performed. Theoretical values of chromium equivalent, nickel equivalent, ferrite number, and pitting corrosion equivalent number (PREN) obtained from chemical composition of clad samples suggest that Creq, Nieq, ferrite number, and PREN (Pitting Corrosion Equivalent Number) do not change significantly with an increase in heat input. Corrosion rate increases with an increase in heat input within the experimental domain.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.