Abstract
The effect of cold work (CW) on the microstructure and corrosion fatigue (CF) resistance of 316 LN stainless steel (SS) using microscopic, electrochemical and surface analytical methods was investigated. The CF resistance increases with CW. The fractographs revealed that the crack growth zone was minimum for the base metal as compared to CW SS. Fatigue-tested sample revealed a slip offset was high for as-received, while not much significant difference for 5 and 20% CW SS at low mean stress levels. The presence of NH4 improved passivity by the formation of nitrate ions that inhibits anodic dissolution.
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