" Nanocomposites and nanomaterials " 

Deformability of nanodispersed titanium alloys under isothermal conditions

A.V. Titov1, K.B. Balushok 2, L.V. Shmeleva3, A.D Suprun3
1 Educational and Research Institute of Mechanical Engineering of the National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Prospect Nauki, 37, Prosp.Peremohy, Solomyanskyi district, Kyiv, Ukraine, 03056. 

2 The Motor Sich Joint Stock Company, 15, Motorobudivnikiv Avenue Zaporizhzhia, Ukraine, 69068

3 Department of Theoretical Physics, Faculty of Physics, Taras Shevchenko National University of Kyiv. Volodymyrska Street, 64/13, Kyiv, Ukraine, 01601
E-mail: lshmel@univ.kiev.ua

This investigation is devoted to the study of the possibility of creating processes of forming parts with thin-walled elements of titanium alloys and powder materials. The goal of the research is to increase the deformability of products in the conditions of viscoplastic flow at certain process parameters. The effect of short-term creep for difficult-to-deform titanium alloys and especially for powdered titanium materials, can be achieved only in a narrow temperature range. And the presence of this effect directly depends on the state of the source material, namely, the grain size of the source material and the distribution of components for multiphase materials. As a rule, in fine-grained alloys the grain size can vary in the range from tens of nanometers to tens of micrometers. Therefore, previously, the paper conducted a theoretical and experimental study to clarify the question of the prospects of deformability of the material depending on the grain size of the source material. The acquired knowledge will be the basis for choosing a nanostructured material more suitable for technological use.
Based on nanostructured titanium and powder materials, the model is constructed to study the elastic characteristics in a certain temperature range, in particular, the strains speeds. The influence of temperatures and strain rates on the plasticity of the base material is also investigated.