Corrosion of Dissimilar Welded Joints of Monel 400 and AISI 1020 Carbon Steel

Abstract

Nickel–copper alloys are widely used as corrosion resistant materials in electrochemical,   marine engineering and many other applications. The corrosion rates of these alloys decrease sharply with increasing nickel content in the alloy. In the present work, the effect of 10% HCl solution on Monel400 and AISI 1020 carbon steel joints made by Friction Stir Welding and Shielded Metal Arc Welding was investigated. Microstructure evolutions of welds were characterized using optical microscopy and Scanning Electron Microscopy. The work has been carried out using cyclic, potentiodynamic polarization, Specimens was submerged in 10% HCl solution for 30 days and the corrosion effect was investigated. Dealloying phenomenon was observed