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The martensite transformation induced by tensile elongation and its effect on the behavior of phase electrochemistry ofAISI 304 and 316L in 3.5% NaCl solution were studied. The results show that the content of α’-martensite in stainless steel 304 increases with the true strain. As α’-martensite content increased, free corrosion potential and pitting potential of stainless steel 304 in3.5% NaCl solution appeared the change trend of a minimum. It was also found that pitting nucleated preferentially at the phase interfaces between martensite and austenite. There existed apparent difference between electrochemical properties of austenite and of martensite for stainless steel 304 and 316L in 3.5% NaCl solution.
The martensite transformation induced by tensile elongation and its effect on the behavior of phase electrochemistry of AISI 304 and 316L in 3.5% NaCl solution were studied. The results show that the content of α’-martensite in stainless steel 304 increases with the true strain. As α was found that the pitting nucleated preferentially at the phase interfaces between martensite and austenite. There was also found that pitting nucleated preferentially at the phase interface between martensite and austenite. α’-martensite content increased, free corrosion potential and pitting potential of stainless steel 304 in 3.5% NaCl solution apparent difference between electrochemical properties of austenite and of martensite for stainless steel 304 and 316L in 3.5% NaCl solution.