EFFECT OF STRUCTURE OF TITANIUM ALLOYS ON THE RELATIONSHIP CHARACTERISTICS OF THEIR DUCTILITY, TOUGHNESS AND MECHANICAL STABILITY

SHYIAN Artur V., Cand. Phys.-Math. Sc., Senior Researcher of the Department of Physics of Strength and Fracture, Kurdyumov Institute of Metal Physics of the National Academy of Sciences of Ukraine, Kiev, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

MESHKOV Yuriy Ya., Corresponding Member of the NAS of Ukraine, Dr. Techn. Sc., Chief Researcher of the Department of Physics of Strength and Fracture, Kurdyumov Institute of Metal Physics of the National Academy of Sciences of Ukraine, Kiev, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

SAVVAKIN Dmitriy G., Dr. Phys.-Math. Sc., Leading Researcher of the Department of Physics of Strength and Plasticity Inhomogeneous Alloys, Kurdyumov Institute of Metal Physics of the National Academy of Sciences of Ukraine, Kiev, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Formulated the idea of the two types of behavior of mechanical properties of structural titanium alloys in the relationship -plasticity-strength-mechanical stability-. It is shown that the same values of strength &#963 0,2 and mechanical stability Kms species belonging alloys is caused by their level of plasticity: the first type includes alloy increased, and the second-with a reduced level &#968 K. It is found that the species of the titanium alloys produced using powder metallurgy technology, the main influence the grain size and pore volume content, thus increasing the grain size and increase of porosity lead to a sharp decrease in the plastic properties of the alloy, which may cause changes in the behavior of their species mechanical characteristics. Specific accessory has a decisive influence on the degree of inclination of the alloy to its embrittlement under the influence of factors such as low temperature and stress concentrators (cracks, cuts, etc.).

mechanical stability, generalized diagram, kind of behavior of mechanical characteristics, species

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