Effects of hydrogen on the hot deformation behaviour of Ti–6Al–4V alloy: Experimental and constitutive model studies.

Highlights: [•] Hydrogen can be retained in the alloy in air when deformed at 1100°C. [•] Hydrogen addition has a positive effect on the increment of flow stress. [•] The strain rate sensitivity shows an increasing trend with hydrogen. [•] Hydrogen significantly affects the variables introduced in the constitutive models. [Copyright &y& Elsevier]