4_2014_sen_10

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
  You can access full text version of the article
Bibliography

  • Sorokin V.G. Stali i splavy. Marochnik [Steels and alloys. Grade guide]. Moscow, Intermet. Inzhiniring, 2001. 608 p.

  • Shmykov A.A. Spravochnik termista [Guide of heat-treater]. Moscow, Mashgiz, 1961. 392 p.

  • Tylkin M.A. Spravochnik termista remontnoi sluzhby [Directory treater of repair service]. Moscow, Metallurgiia, 1981. 648 p.

  • Kotrechko S.A., Meshkov Iu.Ia. Predel'naia prochnost'. Kristally, metally, konstruktsii [Ultimate strength. Crystals, metals, structure]. Kiev, Nauk. dumka, 2008. 295 p.

  • Kotrechko S.A., Meshkov Iu.Ia., Shiian A.V. Mekhanicheskaia stabil'nost' - universal'naia mera soprotivleniia perekhodu v khrupkoe sostoianie metalla [Mechanical stability - universal measure of the transition resistance to brittle state of metal]. Uspekhifizikimetallov - Progress in metal physics, 2009, no. 2, pp. 207-228.

  • Kotrechko S.A. [et al.]. Zakonomernosti izmeneniia pokazatelia deformatsionnogo uprochneniia konstruktsionnykh stalei pri deformatsiiakh, bol'shikh ravnomernoi [Patterns of change in the strain hardening of structural steels under deformation, large uniform]. Stal' - Steel, 2013, no. 6, pp. 70-76.

  • Shiian A.V. Opredelenie kharakteristik khrupkoi prochnosti i mekhanicheskoi stabil'nosti konstruktsionnykh stalei [Characterization of the fragile stability and mechanical strength structural steels]. MTOM, 2012, no. 3-4, pp. 29-56.

  • Shiian A.V. [et al.]. Vzaimosviaz' svoistv prochnosti, plastichnosti i mekhanicheskoi stabil'nosti konstruktsionnykh stalei [Correlation properties of strength, ductility and mechanical stability of the structural steels]. MTOM, 2013, no. 4, pp. 12-30.

  • Kotrechko S.A., Meshkov Iu.Ia., Shiian A.V. Plastichnost' i khladostoikost' konstruktsionnykh stalei [Ductility and cold resistance of structural steels]. Problemy prochnosti - Strength problems, 2010, no. 1, pp. 112-119.

  • Meshkov Iu.Ia., Serditova T.N. Razrushenie deformirovannoi stali [Destruction of deformed steel]. Kiev, Nauk. dumka, 1989. 160 p.

  • Pisarenko G.S. Prochnost' materialov i elementov konstruktsii v ekstremal'nykh usloviiakh [Strength of materials and structural elements during extreme conditions].Kiev, Nauk. dumka, 1980. 535 p.

  • Koshelev P.F., Beliaev S.E. Prochnost' i plastichnost' konstruktsionnykh materialov pri nizkikh temperaturakh [Strength and ductility of structural materials at low temperatures]. Moscow, Mashinostroenie, 1967, vol. 1-2. 315 p.

  • Panasiuka V.V. Mekhanika razrusheniia i prochnost' materialov. Spravochnoe posobie [Fracture mechanics and strength of materials. Reference Guide]. Kiev, Nauk. dumka, 1988, vol. 1-4. 620 p.

  • Meshkov Iu.Ia. [et al.]. Novyi podkhod k otsenke kachestva konstruktsionnykh stalei [A new approach to assessing the quality of structural steels]. Stal - Steel', 2012, no. 8, pp. 66-71.

  • Sigorskii V.P. Matematicheskii apparat inzhenera [Body of mathematics of engineer]. Kiev, Tekhnika, 1977. 768 p.

  • Kotrechko S.A. Zakonomernosti izmeneniia pokazatelia deformatsionnogo uprochneniia konstruktsionnykh stalei pri deformatsiiakh, bol'shikh ravnomernoi [Patterns of change in the strain hardening of structural steels under deformation, more jogless]. Stal - Steel', 2013, no. 6, pp. 70-76.