材料期刊网

Interaction of Mechanical and Electrochemical Factors during Corrosion Fatigue of Fe-26Cr-1Mo Stainless Steel in 1M H_2SO_4 Solution

Jianqiu WANG , Jin LI , Ziyong ZHU and Wei KE (Corrosion Science Laboratory , Institute of Corrosion and Protection of Metals Chinese Academy of Sciences , Shenyang , 110015 , China)Qishan ZANG and Zhongguang WANG (State Key Laboratory for Fatigue and Fracture

材料科学技术（英）

The cyclic plastic straining electrode technique has been used to investigate the transient electrochemical behaviour of Fe-26Cr1Mo stainless steel in 1M H2SO4 solution at a passive potential.The influence of plastic strain amplitude and plastic strain rate on the dissolution current response was analysed. The experimental results showed that the transient current was dependent on the competitive process of the surface film rupture and repassivation of the new surface. The high plastic strain amplitude and the high plastic strain rate caused a change of electrochemical activity of specimen surface. In the condition of low strain amplitude and strain rate, the characteristics of current response was mainly relative tp the process of new surface repassivation.The competition kinetics has been analysed through the comparison of plastic strain rate and repassivating rate

关键词: