Research of Hydrogenation and Dehydrogenation Effect on the Structural and Phase State of the Titanium Alloy

Effect of hydrogen on the structural and phase state of the fine-grained and submicrocrystallinestructure of two-phase (alpha + beta) titanium Ti-6Al-4V alloy was investigated by the methods of electron microscopy and X-ray diffraction analysis. Hydrogenation is found to result in minor structural and phase changes both in fine-grained and submicrocrystalline samples.The use of electron beam exposure combined with heating for hydrogen release in the Ti-6Al-4V alloy is shown to reduce degassing time and decrease the hydrogen concentration to the values closed to the engineering standards for the Ti-6Al-4V alloys.