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Title of the article

Assessment of the mechanical quality of structural steels by their ability to resist brittle fracture at uniaxial tension
Authors

Meshkov Iu.Ia., Corresponding Member of the National Academy of Sciences of Ukraine, Doctor of Technical Science, G. V. Kurdyumov Institute for Metal Physics of the National Academy of Sciences of Ukraine, Kyiv, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

Shiian A.V., Candidate of Physical and Mathematical Sciences, Senior Researcher of the G. V. Kurdyumov Institute for Metal Physics of the National Academy of Sciences of Ukraine, Kyiv, Ukraine

Soroka E.F., Advanced Student of the G. V. Kurdyumov Institute for Metal Physics of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
In the section TECHNOLOGICAL MECHANICS
Year 2014 Issue 4 Pages 75-81
Type of article RAR Index UDK 669.01:539.4;539.2 Index BBK  
Abstract Theory on possibility to evaluate mechanical quality of structural steels as their possibility to resist brittle fracture is presented. It is exhibited that characteristic of mechanical stability Kms developed earlier can be used for this purpose. Technique for evaluation of alloys' quality by the extent of closeness of ductility &#968k and mechanical stability Kms to their optimal values at given strength &#9630,2 is developed. New "indicator" for quality of structural steels is offered - this is the measure of quality by the mechanical stability Kms at given strength &#9630,2, which represents their resistibility to brittle fracture. Based on interrelation of properties "ductility - strength - mechanical stability", statistically reliable technique for ranking of alloys by the levels of mechanical quality is elaborated. Estimation of the mechanical quality and ranking by this property is executed for several structural steels.
Keywords

mechanical stability, brittle fracture, optimization curve, the measure of mechanical quality, the level of mechanical quality
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