Title of the article

THE INFLUENCE OF STRAIN RATE ON THE STRENGTH THE CONSTRUCTIONAL LOW-ALLOY STEEL

Authors

KYZIOŁ Lesław, Faculty of Marine Engineering, Gdynia Maritime University, Gdynia, Poland,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., 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.

In the section INTERNATIONAL SCIENTIFIC COOPERATION
Year 2017 Issue 3 Pages 91-95
Type of article RAR Index UDK 669.14:539.382.2 Index BBK  
Abstract

The article presents the results of the influence strain rates on the increase in strength of tested constructional steel. Elastic deformation simply involves stretching of atoms away from their equilibrium separation. Plastic deformation occurs through collective movement of atom planes. Therefore, you should first estimate the stress required to move one plane across another. The dislocations are the basis for plastic deformation. The formation and interaction of dislocations require an analysis of the issues of plastic deformation, the effect of temperature, strain rate and the stress-strain. Johnson and Cook proposed the unified constitutive laws. The Equation Johnson and Cook includes a strain hardening term, a strain-rate term, and a temperature-dependence term. This equation describes well the results of research. Studies have shown that the growth strain rate very substantially affect the increase in strength properties of the constructional steel 15G2ANb.

Keywords

steel, dynamic properties of steel, strain rate, dislocations

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Bibliography
  • Follansbee P.S. Fundamentals of strength. New Jersey, Wiley, 2014.
  • Estrin E. Dislocation-density-related constitutive modeling, in unified constitutive laws of plastic deformation. New York, Academic Press, 2003, vol. 48, pp. 171–273.
  • Cottrell A.H. Theory of crystal dislocations. London, 1964.
  • Reael W.T. Dislocations in crystals. McGraw-Hill, New York, 1953.
  • Follansbee P.S., Huang J.C., Gray G.T. Low-temperature and high-strain-rate deformation of nickel and nickel-carbon alloys and analysis of the constitutive behavior according to an internal state variable model. Acta Metallurgica et Materialia, 1990, vol. 38, no.7, pp. 1241–1254.
  • Johnson G.R., Cook W.H. Proceedings of the 7th International Symposium on Ballistics “A constitutive model and data for metals subjected to large strains, high strain rates and high temperatures”. The Hague, 1983, pp. 541–548.
  • Kyzioł L., Garbacz G. The dependence of the strength of austenitic steel 0H18N9S of strain rate. Logistyka, 2014, no. 6, pp. 6520–6528.
  • Kocks U.F., Argon A.S., Ashby M.F. Thermodynamics and kinetics of slip, in Progress in Materials Science. Pergamon Press, Oxford, 1975, vol. 19, 119 p.
  • Dieter G.E. Mechanical Metallurgy. McGraw-Hill Series in Materials Science and Engineering, McGraw-Hill Book Company, New York, 1976.
  • Kyzioł L., Zatorski Z., Dobrociłski S., Skrzydlak A., Bohn M., Wypych W., Michalski W. Dynamic characteristics of materials for marine structures, Final report from the work of pk. CONSTRUCTOR, stage I–III, AMW, Gdynia 2002–2004.