Structure, Texture and Durometric Properties Through the Section of the Hot-Extruded Tube of Titanium Alloy PT-1M

F. V. Vodolazsky, N. A. Barannikova, A. G. Illarionov

Abstract


The study considers the formation of the structure, texture, and hardness of hot extruded tube of titanium alloy PT-1M. It is shown that hot extrusion at 840 °C, which is higher than the ?-phase recrystallization temperature, result to the development of dynamic and primary recrystallization processes and ensures the formation of homogeneous and fine-grained structure through-out the cross section with a two-component tangential texture (0001)TD<10-10>ED+(0001)TD<11-20>ED (TD – tangential direction, ED – extrusion direction) and hardness of 155 HV. It has been established that a higher cooling rate of the surface areas of the tube after extrusion result to a less active development of recrystallization processes which lead to the formation of a finer granular structure near the outer surface. This weaken recrystallization component of (0001)TD<11-20>ED

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DOI: http://dx.doi.org/10.24892/RIJIE/20200102

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