Commercially pure titanium (CP-Ti) is one of the most widely used metallic material for biomedical applications owing to its unique combination of relatively low stiffness, biocompatibility and high corrosion resistance in the body fluids. However, mechanical strength of CP-Ti is too low to exploit this material in case of load-bearing replacements such as modern narrow dental implants. One of the possible way to overcome this drawback is grain refinement to the nanoscale by large plastic deformation methods.

Tungsten is a promising candidate material for the wall of a future fusion reactor due to its low erosion yield and low hydrogen solubility. However, fusion neutron irradiation will induce radiation defects in the material which can strongly increase hydrogen retention. Therefore, it is important to study the mechanism of defect creation and its influence on hydrogen retention in tungsten.