Influence of strain rate and temperature on the structure. Property behavior of high-purity titanium

The effect of strain rate, temperature, grain size, and texture on the substructure and mechanical response of high-purity polycrystalline titanium is presented. The compressive stress-strain response of 20 and 240 mu m grain size high-purity Ti was found to depend on both the applied strain rate; 0.001 less than or equal to (epsilon) over dot less than or equal to 7500 s(-1), and the test temperature; 77 less than or equal to T less than or equal to 873 K. The rate of strain hardening in Ti is seen to increase with increasing. strain rate. The substructure of high-purity Ti deformed at high-strain-rate or quasi-statically at 77K displayed a higher incidence of deformation twinning than during quasi-static deformation at 298K.