PREDICTION VALUES TOUGHNESS KCU STRUCTURAL TITANIUM ALLOYS

SHYIAN Аrtur V., D. Sc. in Eng., 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, D. Sc. in Eng., 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.

Toughness characteristic is widely used for testing on the basis of metal brittleness or embrittlement. Currently, due to the need to save material, the procedure for determining the toughness of the structural characteristics of titanium alloys is quite problematic and costly, requiring the development of new ways to predict. The purpose is to develop methods of optimization and calculation of the value of toughness KCU titanium alloys according to the basic mechanical characteristics of the metal. Within the concept of the mechanical stability of optimization methods used structural properties of titanium alloys in the system of the relationship “plasticity - strength - mechanical stability” alloys separating into two kinds of behavior of the mechanical characteristics of the mechanical system and evaluation of metal quality. The dependence, with which we can predict the value of toughness KCU structural titanium alloys using only basic mechanical characteristics of the metal-proof stress σ0,2, tensile strength σS and the percentage reduction ψ at the time of the destruction of the sample, determined by the results of tests on the quasi-static uniaxial stretching. It is shown that the amount of KCU structural titanium alloy forming the basic mechanical properties σ0,2, σS, as well as comprehensive indicators of strain hardening n and mechanical quality for the kind of behavior of mechanical characteristics and a certain interval changes σ0,2, n, σ0,2 /σS. The developed method of settlement prediction KCU toughness values will save time and costs for testing structural titanium alloys on the basis of brittleness or embrittlement.

toughness, mechanical stability, the embrittlement, the optimization of the mechanical properties, mechanical quality measure

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