Estimation of mechanical properties of steel 15пс
DOI:
https://doi.org/10.30838/J.PMHTM.2413.261218.36.563Keywords:
steel, mechanical properties, chemical composition, structure, planning matrix, mathematical model,Abstract
Abstract. Formulation of the problem. Predicting the mechanical properties of structural carbon steels is of great scientific and practical importance. Along with the physical-mechanical methods of evaluating the properties of steels, mathematical methods are being actively implemented, which allows to save money and time for conducting cost exams. The relevance of this work is due to the difficulties that arise in assessing the accuracy of the prediction of real and model data. This is due to the multifactorial carbon steel manufacturing technology where even a slight change in the technology parameters can lead to a significant change in the quality criteria of the target product. The paper proposes to investigate the influence of elements of chemical composition and structure on the mechanical properties of structural steel 15пс using the methods of mathematical analysis. Method. Constructional steel 15пс (sheet thickness 14 mm according to ГОСТ 16523) was selected as the steel for the study. The technique of planning experiments at the levels of factors +1 and 1 is used to evaluate the mechanical properties of steel 15пс in the state of factory delivery on the basis of the analysis of the influence of elements ofchemical composition and structure. Results of the experiment. As a result of the implementation of the experiment planning matrix, dependencies were obtained describing the influence of the elements of the chemical composition and ferrite-pearlitic structure of the steel on the properties. The pairwise correlation coefficients of R2for predicting the tensile strength based on the effect of the elements of the chemical composition are 0,89, a relative elongation of 0,82. When forecasting mechanical properties based on the influence of ferrite-pearlite structure 0,77 and 0,75 respectively. The calculated Fisher and Cochran criteria confirm the adequacy of the obtained results of mathematical modeling of properties. Conclusions. Using the experiment planning matrix, a mathematical model for estimating the mechanical properties of 15пс steel was constructed. Based on the analysis of the coefficients of the equations, histograms were obtained describing the influence of the elements of the chemical composition on the properties of the metal. This approach will allow, without additional funds, to predict the tensile strength and elongation of steel 15пс not only at the end of the main technological cycle, but also in the process of production of rolled metal within the standard technology and regulatory documents.
References
Bolshakov V.I., Volchuk V.N. and Dubrov Yu.I. O prognozirovanii kachestva tselevogo produkta v periodicheskikh tekhnologiyakh [Predicting the quality of a desired product in periodic technologies]. Dopovidi Natsionalnoi akademii nauk Ukrainy [Reports of the National Academy of Sciences of Ukraine]. 2014, no. 11, pp. 77-81. (in Russian).
Mishutin A.V., Kroviakov S.O., Mishutin N.V. and Bogutsky V.L. Modified expanded clay lightweight concretes for thin-walled floating structures. Proceeding of the Second International Conference on Concrete Sustainability (ICCS16), held in Madrid, Spain on 13–15 June 2016, Barcelona, Spain : International Center for Numerical Method in Engineering, 2016, pp. 743–749.
Kroviakov S. and Mishutn A. Production technology of modified expanded clay lightweight concrete for floating structures. The Scientific Journal of Cihan University – Sulaimanyia. 2017, vol. 1, no. 4, pp. 2-10.
Bolshakov Vad.I., Bolshakov V.I., Volchuk V.N. and Dubrov Yu.I. Systemnyy analiz tekhnolohiyi vyrobnytstva masyvnoho metalevoho lyttya [System analysis techniques of producing solid metal castings]. Visnyk Natsionalʹnoyi akademiyi nauk Ukrayiny [Bulletin of the National Academy of Sciences of Ukraine]. 2015, no. 9, pp. 69–73. (in Ukrainian).
Bolshakov V.I., Volchuk V.N. and Dubrov Yu.I. Etapy identyfikatsiyi bahatoparametrychnykh tekhnolohiy ta shlyakhy yikh realizatsiyi [Stages multiparameter identification technologies and ways of their implementation]. Visnyk Natsionalʹnoyi akademiyi nauk Ukrayiny [Bulletin of the National Academy of Sciences of Ukraine]. 2013, no. 8, pp. 66–72. (in Ukrainian).
Bolshakov V.I., Volchuk V.N. and Dubrov Yu.I. Osobennosti primeneniya mul'tifraktal'nogo formalizma v materialovedenii [Features of the multifractal formalism in materials]. Dopovidi Natsionalnoi akademii nauk Ukrainy [Reports of the National Academy of Sciences of Ukraine]. 2008, no. 11, pp. 99-107. (in Russian).
Bolshakov V.I., Volchuk V.M. and Dubrov Yu.I. Fundamentals of fractal modeling. Kyiv, Ukraine : PH "Akademperiodyka" National Academy of Sciences of Ukraine, 2017, 170 p. (in Russian).
Volchuk V.M. Opredeleniye chuvstvitel'nosti mul'tifraktal'nykh kharakteristik metalla [Determining the sensitivity of the multifractal characteristics of metals]. Visnyk Prydniprovs’koyi derzhavnoyi akademiyi budivnytstva ta arkhitektury [Bulletin of Prydniprovs’ka State Academy of Civil Engineering and Architecture]. 2015, no. 12, pp. 10–14. (in Russian).
Bolshakov Vad.I., Bolshakov V.I., Volchuk V.N. and Dubrov Yu.I. Chastkova kompensatsіya nepovnoti formalnoy aksіomatiki pri іdentifіkatsіy structyru metaly [The partial compensation of incompleteness of formal axiomatics in the identification of the metal structure]. Visnyk akademiyi nauk Ukrayiny [Bulletin of the National Academy of Sciences of Ukraine]. 2014, no. 12, pp. 45−48. (in Ukrainian).
Volchuk V.N. Issledovaniya vliyaniya khimicheskogo sostava chugunnykh prokatnykh valkov na ikh mekhanicheskiye svoystva [Studies of the influence of the chemical composition of cast iron rolls on their mechanical properties]. Visnyk Prydniprovs’koyi derzhavnoyi akademiyi budivnytstva ta arkhitektury [Bulletin of Prydniprovska State Academy of Civil Engineering and Architecture]. 2014, no. 5,
pp. 12–18. (in Russian).
Volchuk V. N. Primeneniye veyvlet-analiza dlya otsenki zerennoy struktury metallov [The use of wavelet analysis to assess the grain structure of metals]. Metallovedenie i termicheskaya obrabotka metallov [Metall Science and Heat Treatment of Metals]. 2009, no. 4,
pp. 24–32. (in Russian).
Volchuk V.M. Fraktal'nyy analiz ballovoy sistemy [Fractal analysis of the point system]. Visnyk Prydniprovs’koyi derzhavnoyi akademiyi budivnytstva ta arkhitektury [Bulletin of Prydniprovs’ka State Academy of Civil Engineering and Architecture]. 2018, no. 5,
pp. 47–53. (in Russian).
Bolshakov V.I., Volchuk V.M. and Dubrov Yu.I. Regularization of One Conditionally Ill-Posed Problem of Extractive Metallurgy. Metallofizika i Noveishie Tekhnologii, 2018, vol. 40, no. 9, pр. 1165-1171.
Bolshakov V.I., Volchuk V.M. and Dubrov Yu.I. Primeneniye teoretiko-informatsionnogo podkhoda dlya identifikatsii struktury metalla [The use of information–theoretic approach to identify the structure of the metal]. Visnyk Prydniprovsʹkoyi derzhavnoyi akademiyi budivnytstva ta arkhitektury [Bulletin of Prydniprovska State Academy of Civil Engineering and Architecture]. 2014, no. 8, pp. 4–9.
(in Russian).
Bolshakov V.I., Volchuk V.N. and Dubrov Yu.I. O primenenii imitatsionnogo modelirovaniya v materialovedenii [The application simulated modelling in materials science]. Metaloznavstvo ta termichna obrobka metaliv [Metall Science and Heat Treatment of Metals]. 2015, no. 4. pp. 26−31. (in Russian).
Volchuk V.N. K opredeleniyu oblasti kompromissa kharakteristik kachestva materialov [By identifying areas compromise performance materials quality]. Metallovedenie i termicheskaya obrabotka metallov [Metall Science and Heat Treatment of Metals]. 2015, no. 3,
pp. 21–25. (in Russian).
Volchuk V.N. K voprosu o primenenii teorii mul'tifraktalov dlya otsenki mekhanicheskikh svoystv metalla [On the application of the theory of multifractals for the evaluation of the mechanical properties of a metal]. Metallovedenie i termicheskaya obrabotka metallov [Metall Science and Heat Treatment of Metals]. 2014, no. 3, pp. 12–19. (in Russian).
Volchuk V., Klymenko I., Kroviakov S., Orešković M. Method of material quality estimation with usage of multifractal formalism. Tehnički glasnik – Technical Journal. 2018, vol. 12, no. 2, рр. 93-97.
Volchuk V.M. K primeneniyu fraktal'nogo formalizma pri ranzhirovanii kriteriyev kachestva mnogoparametricheskikh tekhnologiy [On the Application of Fractal Formalism for Ranging Criteria of Quality of Multiparametric Technologies ]. Metallofizika i noveyshiye tekhnologii [Metal Physics and Advanced Technologies]. 2017, vol. 39, no 3, рp. 949-957. (in Russian).
Bolshakov V., Volchuk V. and Dubrov Yu. Fractals and properties of materials. Saarbrucken: Lambert Academic Publishing, 2016, 140 p.
Bolshakov V.I., Volchuk V.M. and Dubrov Yu.I. Fraktal'nyy podkhod pri identifikatsii slozhnykh sistem [Fractal approach to the identification of complex systems]. Dopovidi Natsionalnoi akademii nauk Ukrainy [Reports of the National Academy of Sciences of Ukraine]. 2017, no. 6, pp. 46-50. (in Russian).
Bolshakov V.I., Volchuk V.N., Dubrov Yu.I. and Deyneko L.N. Formirovanie modeli prognoza kachestva materiala, osnovannoj na `ekspertnoj ocenke i aktivnom `eksperimente [Formation of a model for predicting the quality of a material based on expert judgment and an active experiment]. Komp'yuternoe materialovedenie i obespechenie kachestva : mater. k 45-mu mezhdunar. sem. po modelirovaniyu i optimizacii kompozitov [Computer Science and Quality Assurance : mater. to the 45th Intern. Sem. on modeling and optimization of composites]. Odessa : AstroPrint, 2006, pp. 146−150. (in Russian).
Berns H., Theisen W. Ferrous materials: Steel and Cast Iron. Berlin Heidelberg: Springer, 2008, 418 p.
Downloads
Published
Issue
Section
License
Authors that are published in this journal agree to follow the conditions:
Authors reserve the right to the authorship of his work and cede the right to the journal of first publication of this work on conditions of the license under the Creative Commons Attribution License, which allows others to distribute it freely with the obligatory reference to the author of the original work and the first publication of the work in this journal.
