The Effect of Severe Deformation on the Structure and Mechanical Properties of Titanium Hydride

The effect of both deformation conditions and pressing pressure on the structure and properties of titanium hydride formed by various methods, such as quasi-hydrostatic pressing in a high-pressure chamber, free upsetting and static one-stage pressing with subsequent second compaction, is studied.As found out, the stresses exceeding the ultimate strength of titanium hydride appear at the contact surfaces of particles at high pressures.The consolidation of the powder occurs through the mechanism of particle crushing, which contributes to the further compaction of 2 powder, and due to plastic deformation.As also found out, the deformation of titanium hydride under conditions of free radial shear provides plastic deformation at significantly lower pressures as compared to the uniform quasi-hydrostatic compression.As shown, the rate of hydrogen release from sintered compacts decreases at higher pressing pressure and the degree of deformation.