Effect of temperature on stress corrosion cracking of 316 L stainless steel in high-temperature water

The effect of temperature on stress corrosion cracking(SCC) of 316 L stainless steel in high-temperature water was investigated using slow strain rate tests.The fracture morphology of 316 L stainless steel SCC specimens were analyzed with the aid of SEM.The strain-stress results showed that 316?L stainless steel exhibited SCC sensitivity in high-temperature water from 200 ℃ to 345 ℃,and its brittlement increased with increase temperature,indicating that the SCC sensitivity of 316 L stainless steel was raised.The fractography analysis results also proved this susceptibility clearly.The SCC sensitive temperature of 316 L stainless steel is 250 ℃,at which the edge fractography morphology of the specimens presented brittle fracture characteristics.