Silicon effect on the formation of graphite inclusions in gray cast iron
DOI:
https://doi.org/10.15587/1729-4061.2017.107342Keywords:
gray cast iron, lamellar graphite, morphology, silicon monoxide, metallography, petrography, micro-X-ray spectral analysisAbstract
Using conventional and high-temperature metallography, micro-X-ray spectroscopy and mass spectral analyzes, as well as the petrographic method, the study explores the effect of silicon on the morphology of graphite inclusions in gray cast irons.
So far, the role of silicon in the theory of graphite formation during the crystallization of cast irons remains unclear. Therefore, the disclosure of the mechanism of the influence of silicon on the formation of graphite inclusions can help fully control the structure and properties of cast iron castings and develop optimal technological processes for their production.
It has been established that the reaction in the silicon interaction with carbon monoxide in iron-carbon alloys, leading to the formation of a surface-active silicon monoxide, is caused by the temperature and physicochemical conditions of the melt. In gray cast iron, the rate and intensity of the course of this reaction have a direct effect on the morphology of lamellar graphite. The study has revealed four morphological forms of primary graphite (rosette, rectilinear-plate, ramiform, and vermicular), formed in various physicochemical conditions of the crystallization of gray cast ironReferences
- Girshovich, N. G. (1966). Kristallizaciya i svoystva chuguna v otlivkah. Moscow: Mashinostroenie, 563.
- Lacaze, J., Valle, N., Theuwissen, K., Sertucha, J., El Adib, B., Laffont, L. (2013). Redistribution and Effect of Various Elements on the Morphology of Primary Graphite in Cast Iron. Advances in Materials Science and Engineering, 2013, 1–9. doi: 10.1155/2013/638451
- Riposan, I., Chisamera, M., Stan, S., Skaland, T. (2005). A new approach to graphite nucleation mechanism in gray irons. Proceedings of the AFS Cast Iron Inoculation Conference. Illinois, EEUU, 31–41.
- Soinski, M. S., Wawrzyniec, A. (2010). Initial assessment of effectiveness of some selected inoculants for grey cast iron. Archives of Foundry Engineering, 10 (2), 155–158.
- Stojczew, A., Janerka, K., Jezierski, J. et. al. (2014). Melting of Grey Cast Iron Based on Steel Scrap Using Silicon Carbide. Archives of Foundry Engineering, 14 (3), 77–82.
- Kul'bovskiy, I. K., Poddubniy, A. N., Bogdanov, R. A. (2008). Vliyanie nasledstvennosti shihty na formirovanie centrov kristallizacii grafita v rasplave promyshlennogo chugun. Vestnik Bryanskogo gosudarstvennogo tekhnicheskogo universiteta, 2 (18), 5–11.
- Riposan, I., Chisamera, M., Stan, S., White, D. (2009). Complex (Mn, X) S compounds-major sites for graphite nucleation in grey cast iron. China Foundry, 6 (4), 352–358.
- Sommerfeld, A., Tonn, B. (2009). Theory of Graphite Nucleation in Lamellar Graphite Cast Iron. International Journal of Metalcasting, 3 (4), 39–47. doi: 10.1007/bf03355457
- Valle, N., Theuwissen, K., Sertucha, J., Lacaze, J. (2012). Effect of various dopant elements on primary graphite growth. IOP Conference Series: Materials Science and Engineering, 27, 012026. doi: 10.1088/1757-899x/27/1/012026
- Riposan, I., Chisamera, M., Stan, S., Hartung, C., White, D. (2010). Three-stage model for nucleation of graphite in grey cast iron. Materials Science and Technology, 26 (12), 1439–1447. doi: 10.1179/026708309x12495548508626
- Ivanov, V. G., Pirozhkova, V. P., Lunev, V. V., Burova, N. M. (2006). Prichiny nizkoy ehkspluatacionnoy stoykosti izlozhnic iz modificirovannogo chuguna. Teoriya i praktika metallurgii, 1-2, 13–20.
- Pirozhkova, V. P., Yacenko, M. Yu., Lunev, V. V., Grishchenko, S. G. (2012). Atlas mikrostruktur nemetallicheskih vklyucheniy. Zaporozh'e, 167.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2017 Valerii Ivanov, Valentina Pirozhkova, Valentin Lunеv
This work is licensed under a Creative Commons Attribution 4.0 International License.
The consolidation and conditions for the transfer of copyright (identification of authorship) is carried out in the License Agreement. In particular, the authors reserve the right to the authorship of their manuscript and transfer the first publication of this work to the journal under the terms of the Creative Commons CC BY license. At the same time, they have the right to conclude on their own additional agreements concerning the non-exclusive distribution of the work in the form in which it was published by this journal, but provided that the link to the first publication of the article in this journal is preserved.
A license agreement is a document in which the author warrants that he/she owns all copyright for the work (manuscript, article, etc.).
The authors, signing the License Agreement with TECHNOLOGY CENTER PC, have all rights to the further use of their work, provided that they link to our edition in which the work was published.
According to the terms of the License Agreement, the Publisher TECHNOLOGY CENTER PC does not take away your copyrights and receives permission from the authors to use and dissemination of the publication through the world's scientific resources (own electronic resources, scientometric databases, repositories, libraries, etc.).
In the absence of a signed License Agreement or in the absence of this agreement of identifiers allowing to identify the identity of the author, the editors have no right to work with the manuscript.
It is important to remember that there is another type of agreement between authors and publishers – when copyright is transferred from the authors to the publisher. In this case, the authors lose ownership of their work and may not use it in any way.
