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Electrochemical Behaviour of Textured Beta C Titanium Alloy in 3.5% NaCl Solution

Nichul Unissa, Tambe Pankaj, Hiwarkar Vijay

Archives of Metallurgy and Materials

2024

Vol. 69, iss. 2

571--577

The corrosion behaviour of a thermo-mechanically treated Beta C titanium alloy in a 3.5 wt% NaCl solution was investigated in this study. Thermomechanical processing prejudges titanium alloys to improve corrosion properties. Scanning electron microscopy and electron-backscattered diffractions were used to investigate the microstructural evolution and grain orientation after thermo-mechanical processing. The electrochemical characteristics of Beta C titanium alloy were examined using electrochemical impedance spectroscopy (EIS), corrosion potential, and corrosion current density measurements. The 45 percent deformed specimen experiences significant plastic deformation with increased dislocation density, resulting in strong ND //<111> orientation. However, the annealing after deformation exhibits a strong g-fiber texture with the lowest in-grain misorientation, which contributes to improving the corrosion resistance of the titanium alloy.