High strain-rate plastic flow behavior of Ti–6Al–4V from dynamic indentation experiments

Dynamic indentation (DI) tests using spherical projectile have been carried out on solution treated and aged (STA) Ti–6Al–4V alloy at ambient conditions in the velocity range of 32–186 m/s. The DI behavior of the alloy, especially, dynamic hardness, lip height as a function of average strain and depth of the plastic-zone underneath the indentation have been analyzed. Dynamic flow stress–strain curve representing high strain rate flow behavior was also evaluated using constraint factor (CF) determined under static indentation conditions.