Corrosion behavior of thermohydrogen processed Ti6Al4V

The corrosion behavior of thermohydrogen processed Ti6Al4V was evaluated in simulated human body environment (0.15 M NaCl at 37 °C). Compared with the β-solution-treated specimen, the grain-refined specimen A exhibited higher hardness and similar corrosion resistance, which implies better performance as a bioimplant material. At 65 and 80 °C, a decrease in corrosion resistance was observed for both A and B specimens that might be ascribed to the increased grain boundaries and α2 precipitates.