The effect of hydrogen on the strengthening and softening of Ti–6Al–4V alloy

This study reports on the flow behavior and microstructural development during the hot working of Ti–6Al–4V–H alloys. The hot working was performed in the temperature range 1023–1253 K at a strain rate of 0.01 s−1. The strengthening effect of hydrogen on the β phase and the softening effect of hydrogen on the α phase are discussed. Some optimizations of hydrogen content and deformation temperature are developed.