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Metal Science and Metallography
Название Assessment and interpretation of nonmetallic inclusions in steel
DOI 10.17580/cisisr.2018.02.07
Автор A. A. Kazakov, A. I. Zhitenev
Информация об авторе

Peter the Great St. Petersburg Polytechnic University (St. Petersburg, Russia):

A. A. Kazakov, Dr. Eng., Prof., e-mail: kazakov@thixomet.ru
A. I. Zhitenev, Engineer

Реферат

The critical problems of nonmetallic inclusions in steel could be solved by interdisciplinary knowledge based upon steelmaking theory and practice, quantitative metallography and automated feature analysis based on the SEM-EDS analytical technique. A step-by-step method for interpreting the composition of NMI, determined by the SEM-EDS analytical methods, was developed and the nature of all NMIs has been interpreted using thermodynamic modelling. A technique for processing databases, obtained using an automatic feature analyzer (AFA), has been developed. Cluster analysis allowed generalizing these databases by combining NMIs into clusters according to the principle of similarity of their chemical composition and temperature-time nature, depending on the technology of deoxidation and modification of steel. The composition of inclusions along with a large number of analyzed particles, in combination with the methods of thermodynamic simulation makes it possible to restore the temperature-time nature of inclusions, taking into account the entire variety of associated processes occurring in liquid and solidifying steel. Comparison of the determined compositions of NMIs with the results of thermodynamic simulation makes it possible to establish the nature of each cluster of NMIs, associating it with one or another stage of the ladle treatment, casting or solidification. This information is necessary for the development of technological recommendations aimed at increasing the “cleanliness” of steel by NMIs. 

Ключевые слова Non-metallic inclusions, assessment, SEM-EDS method, automated Feature Analysis, cluster analysis, interpretation, thermodynamic simulation, liquid and solidifying steel, solubility surface diagram, steelmaking technology
Библиографический список

1. You D., Michelic S., Presoly P., Liu J., Bernhard C. Modeling Inclusion Formation during Solidification of Steel: A Review. Metals. 2017. Vol. 7 (October). pp. 1–31.
2. Hack K. Inclusion Cleanness in Calcium-Treated Steel Grades. The SGTE Casebook: Thermodynamics at Work, Second Edition. Woodhead Publishing Limited, Cambridge, England. 2008, pp. 267–272.
3. Costa-e-Silva A. Applications of Multicomponent Databases to the Improvement of Steel Processing and Design. Journal of Phase Equilibria and Diffusion. 2017. Vol. 38. No. 6 (December). pp. 916–927.
4. Kong L., Deng Z., Zhu M. Formation and Evolution of Nonmetallic Inclusions in Medium Mn Steel during Secondary Refining Process. ISIJ International. 2017. Vol. 57. No. 9 (July 2017). pp. 1537–1545.
5. Zhang L. Nucleation and Growth of Alumina Inclusions during Steel Deoxidation. 85th Steelmaking Conference Proceedings, Nashville, TN. 2002. Vol. 85 (March). pp. 463–476.
6. Zhang L. Nucleation, Growth, Transport and Entrapment of Inclusions during Steel Casting. JOM. 2013. Vol. 65. No. 9. pp. 1138–1144.
7. Reis B. H., Bielefeldt W. V., Vilela A. C. F. Efficiency of Inclusion Absorption by Slags during Secondary Refining of Steel. ISIJ International. 2014. Vol. 54. No. 7 (August). pp. 1584–1591.
8. Kalisz D. Interaction of Non-Metallic Inclusion Particles With Advancing Solidification Front. Archives of Metallurgy And Materials. 2014. Vol. 59. Issue 2 (June). pp. 493–500.
9. Banaszek J., Mcfadden S., Browne, D. J., Sturz L., Zimmermann G. Natural Convection and Columnar-to-Equiaxed
Transition Prediction in a Front-Tracking Model of Alloy Solidification. Metallurgical and Materials Transactions: A. 2007. Vol. 38A., No. 7. (July). pp. 1476–1484.
10. Matsumiya T., Yamada W., Koseki T., Ueshama Y. Mathematical Analysis of Segregation and Compositional Changes of Nonmetallic Inclusions in Steel during Solidification. Nippon Steel Technical Report. 1993. No. 57 (April). pp. 50–56.
11. Pikkarainen T., Vuorenmaa V., Rentola I., Leinonen M. and Porter D. Effect of Superheat on Macrostructure and Macrosegregation in Continuous Cast Low-Alloy Steel Slabs. IOP Conference Series: Material Science and Engineering. Vol. 117. pp. 1–7.
12. Wang C. Y., Beckermann C. Prediction of Columnar to Equiaxed Transition during Diffusion-Controlled Dendritic Alloy Solidification. Metallurgical and Materials Transactions A. 1994. Vol. 25A. No. 5 (May). pp. 1081–1093.
13. Kazakov A., Kovalev P., Ryaboshchuk S., Mileikovsky A., Malakhov N. Study of Thermal Time Nature of Non-Metallic Inclusions in Order to Improve Metallurgical Quality of High-Strength Tube Steels. Chernye Metally. 2009. No. 12. pp. 5–11.
14. Kazakov A. Nonmetallic Inclusions in Steel – Origin, Estimation, Interpretation and Control. Microscopy and Microanalysis. 2016. Vol. 22. No. S3 (July). pp. 1938–1939.
15. Kazakov A., Zhitenev A., Ryaboshuk S. Interpretation and Classification of Non-Metallic Inclusions. Materials Performance and Characterization. 2016. Vol. 5, No. 5 (December). pp. 535–543.
16. Kazakov A. A., Lubochko D. A., Ryabochuk S. B., Chigintsev L. S. Investigation of the Nature of Nonmetallic Inclusions in HSLA Steels Using an Automatic Particle Analyzer. Chernye Metally. 2014. No. 4. pp. 85–90.

17. Kazakov A. A., Kovalev P. V., Ryaboshuk S. V., Zhironkin M. V., Krasnov A.V. Control of Nonmetallic Inclusions Formation during Converter Steel Production. Chernye Metally. 2014. No. 4. pp. 91–96.
18. Yavoyskiy V. I., Bliznyukov S.A., Vishkarev A. F., Gorokhov L. S., Khokhlov S. F., Yavoyskiy A. V. Deoxidation of Steel, Nucleation, Formation, Coalescence and Removal of Nonmetallic Inclusions. Inclusions and Gases in Steels, Moscow. Metallurgiya. 1979. pp. 57–61.
19. Kiessling R., Lange N. Inclusions belonging to the pseudoternary system MnO–SiO2–Al2O3 and related system. Nonmetallic Inclusions in Steel. Iron and Steel Institute. London. 1965, pp. 10–17.
20. Story S. R., Smith S. M., Fruehan R. J., Casuccio G. S., Potter M. S., Lersch T. L. Application of Rapid Inclusion Identification and Analysis. Iron & Steel Technology. 2005. Vol. 2. No. 9. pp. 41–49.
21. Ren Y., Wang Y., Li S., Zhang L., Zuo X., Lekahn S., Peaslee K. Detection of Non-metallic Inclusions in Steel Continuous Casting Billets. Metallurgical and Materials Transactions. 2014. Vol. 45. No. 4 (August). pp. 1291–1303.
22. Jain A. K., Murty M. N., Flynn P. J. Data Clustering: A Review. ACM Computing Surveys. 1999. Vol. 31. No. 3 (September). pp. 264–323.
23. Kazakov A., Zhitenev A., Kovalev P. Distribution Pattern of Nonmetallic Inclusions on а Cross Section of Continuous Cast Steel Billets For Rails. Microscopy and Microanalysis. 2015. Vol. 21. No. S3 (August). pp. 1751–1752.

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