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. In FSW The
employed rotating speed changed from 200 to 400 rpm, whereas the traverse speed was 50 to 100
mm/min. Sound welds were obtained at the rotating speed of 200 rpm with the welding speed of 50
mm/min, while a groove-like defect was formed when the traverse speed exceeded 200 mm/min. in
SMAW, two electrodes were used (ENiCrFe-3- ENiCu-7). Mechanical properties of the joints were
then evaluated using tensile tests, impact tests, bending tests and micro-hardness at room temperature.
Microstructure evolutions of welds were characterized using optical microscopy. Welds showed high
tensile, impact and hardness results. Specimens were submerged in 10% HCl solution for 30 days and
the corrosion effect was investigated.
