The stress corrosion cracking (SCC) susceptibility of the dissimilar ASTM A36 steels and 316L stainless steels welding in varied temperature of FeCl2

Obtaining perfect dissimilar welding joints, which are exposed to corrosive environments still a problem up to now. The ASTM A36 and 316L stainless steels, dissimilar metals, were joined using Capacitive Discharge Welding (CDW). The welding parameters, such as distance between metals, pressure, applied energy, and surface parameters, were kept constant. The FeCl2 corrosive solution concentration was also kept constant at 0.5M. The temperature of the solution was controlled at varied temperatures, those are: 30 °C, 40 °C, and 50 °C, respectively. The resistance to the Stress Corrosion Cracking (SCC) load was evaluated by time to fracture for certain dead tensile loads and corrosive media. The SEM EDS data were retrieved to have a deep insight into the SCC mechanism. The results show that, with a 10 °C increase in temperature, the SCC Threshold is decreased by 40% which is supported by the data of time to failure for certain loads and also the SEM EDS.