Microstructure and Properties of Ti Rods Produced by Multi-Step SPD
This paper studies the effect of combined SPD treatment on microstructure and mechanical properties of semi-products out of CP Ti. The combined processing, consisting of equal-channel angular pressing and further thermomechanical treatment, produced ultrafine-grained rods out of Grade 2 CP Ti with a diameter of 6.5 mm and a length of up to 1 m. It was established that the formation of homogeneous ultrafine-grained structure in Ti rod with α-grain size of about 100 nm allowed to enhance yield stress by 200% in comparison with initial annealed state.
V.V. Latysh et al., "Microstructure and Properties of Ti Rods Produced by Multi-Step SPD", Materials Science Forum, Vols. 503-504, pp. 763-768, 2006