Abstract
ABSTRACT
The effects of elastic and plastic strain on interfacial behaviour of X52 steel in high-pH solution are studied using slow strain rate tensile testing and Electrochemical Impedance Spectroscopy (EIS). The EIS data revealed a defined relationship between capacitance and resistance with elastic strain. The strain rate influenced the metal dissolution by favouring the active rate over the passive state conditions. The EIS results clearly show the reduction in passive film resistance and increase in passive film capacitance when the strain rate increases while the pre-formed passive film is damaged due to the slow repassivation rate. A transmission line model is also used to simulate the evolution of the electrochemical response and provide a quantitative perspective to the activation-stress conditions.
Keywords
Get full access to this article
View all access options for this article.
