Effect of hydrogenation and hot-cold rolling of compact from titanium sponge on its structure, strain hardening, and fracture behavior

Abstract

Plates of shock-wave-compacted sponge titanium bearing residual discontinuities are subjected to a combined treatment including hydrogen charging, rolling from 800 and 650°C, and a concluding hydrogen-removing annealing. In order to determine discontinuity defects in the metal, hardening curves are plotted in the “true stress — true strain” coordinates. The mechanism of curing of discontinuities by hot-cold rolling of hydrogen-alloyed titanium is analyzed.