Influence of hot deformation on the electrochemical behavior of natural oxides of hipped Ti6Al4V

•The microstructure of TI6Al4V specimens depends on compression process parameters.•The electrochemical behavior of natural oxide depends on microstructure.•The deformation process induces porosity in specimens treated above the β-transus.

The correlation between microstructure of Hot Isostatic Pressing Ti6Al4V, hot deformed, and his electrochemical behavior, has been studied.The specimens have been compressed at three temperatures (900 °C, 1000 °C, 1100 °C), and three different strain rates (0.01 s−1, 0.1 s−1, 1 s−1).Optical and SEM observations have been performed and porosity cluster have been observed for specimens deformed at 900 °C and 1100 °C at 0.1 s−1 and 1 s−1.Potentiodynamic polarization and Electrochemical Impedance Spectroscopy (EIS) have been carried out in NaCl 3.5 wt% solution and the data modeled by Zplot© software. Electric parameters collected, confirmed that the microstructure influences electrochemical behavior of specimens.