At the beginning of the present century it has been demonstrated that nanocrystalline titanium (NC-Ti) can be fabricated by hydrostatic extrusion (HE) which is one of the severe plastic deformation method. NC-Ti obtained in such a way exhibited excellent mechanical properties. The influence of HE on the microstructure and mechanical properties of titanium Grade 2 was first analyzed in 2005. In ...

Fatigue resistance of nanocrystalline commercial pure titanium obtained by hydrostatic extrusion was investigated. Coarse grained titanium and Ti6Al4V alloy were used as the reference materials. The fatigue limit and fatigue life examined at constant stress amplitude, were found to increase significantly compared to those of the coarse-grained counterparts. It is suggested that the observed imp...

We have presented a second case of heterotopic pregnancy after IVF-ET. The most likely cause is direct extrusion of embryos through the tubal ostia by the hydrostatic pressure associated with ET. The diagnosis of ectopic pregnancy must be suspected clinically and not ruled out on the sonographic demonstration of an intrauterine pregnancy. Early diagnosis is essential for the prevention of signi...

The paper presents a detailed analysis of metal flow inside the extrusion dies and demonstrates investigation formation underfilling defects. stress state in defect zones has been analyzed by means simulation based on Eulerian approach. Based this, it was found that mean (hydrostatic pressure) is not only parameter to be placed into criterion get reliable results. author proposes new dimensionl...