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Properties of cast iron modifying with use of new inoculants

Wybrane pełne teksty z tego czasopisma
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Purpose: Modification of various alloys is a well known process for improvement its properties by changing of microstructure character. In foundry technology it is connected mostly to cast iron production where many inoculants is used for obtaining some results like grain refinement, graphite inclusions proper distribution etc. Those changes caused that produced alloy have a much better properties especially mechanical ones. Design/methodology/approach: In the paper were presented some results of the experiments made for checking quality of the two new on Polish foundry market complex inoculants. One of them is a "graphite" inoculant (about 50% C) and second is Ba-Ca combination based inoclulant. The experiments contained metallographic and quantitative metallographic analysis and wedge test bars analysis. Findings: These experiments proved a good quality of inoculants in the field of microstructure improvement (graphite size reduction) and a hard spot defects liquidation. Research limitations/implications: The next experiments are planned for checking the mechanical properties of the produced alloys. Practical implications: The inoculants being analysed are used in several Polish foundries now because of author's good results. Originality/value: There were the first experiments with these materials although the methods of investigations are not novel or original. The results have a very big importance not only from scientific but from practical point of view too.
Rocznik
Strony
25--28
Opis fizyczny
Bibliogr. poz. 16, fot., rys., tab.
Twórcy
autor
autor
  • Division of Foundry, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Towarowa 7, 44-100 Gliwice, Poland, jan.jezierski@polsl.pl
Bibliografia
  • [1] J. Piaskowski, J. Tybulczyk, A. Kowalski, Ductile iron - the greatest achievement in foundry materials of the latest fifty years, Proceedings of the 8th Scientific International Conference „Achievements in Mechanical and Materials Engineering" AMME'99, Gliwice-Rydzyna-Pawłowice-Rokosowo, 1999, 473-476.
  • [2] A. Pytel. K. Sękowski, Microstructure and mechanical properties of vermicular low-alloy cast iron, Proceedings of the 7th Scientific International Conference “Achievements in Mechanical and Materials Engineering” AMME'98, Gliwice-Zakopane, 1998, 435-438, (in Polish).
  • [3] J. Szajnar, T. Wróbel, Influence of magnetic field and inoculation on columnar structure, Journal of Achievements in Materials and Manufacturing Engineering 17 (2006) 209-212.
  • [4] L. Čižek, M. Greger, L.A. Dobrzański, I. Juricka, R. Kocich, L. Pawlica, T. Tański, Mechanical properties of magnesium alloy AZ91 at elevated temperatures, Journal of Achievements in Materials and Manufacturing Engineering 18 (2006) 203-206.
  • [5] H. Leda, T. Tomczak, Influence of solidification conditions and strontium content on microstructure of cast Al-Si-Mg alloys, Proceedings of the 9th Scientific International Conference „Achievements in Mechanical and Materials Engineering” AMME'2000, Gliwice-Sopot-Gdańsk, 2000, 349-352.
  • [6] D. D. Double, A. Hellawell, The nucleation and growth of graphite- the modification of cast iron, Acta Metallurgica Materialia 43/6 (1995) 2435-2442.
  • [7] G. Östberg, Perspectives on research on the formation of nodular graphite in cast iron, Materials & Design 27 (2006) 1007-1015.
  • [8] R. Källbom, K. Hamberg, M. Wessèn, L. E. Björkegren, On the solidification sequence of ductile iron castings containing chunky graphite, Materials Science and Engineering A 413-414 (2005) 346-351.
  • [9] H. Fredriksson, J. Stjerndahl, J. Tinoco, On the solidification of the nodular cast iron and its relation to the expansion and contractions, Materials Science and Engineering A 413-414 (2005) 363-372.
  • [10] S. Pietrowski, G. Gumienny, Crystallisation of ductile cast iron with Mo, Cr, Cu and Ni, Archives of Foundry 6/22 (2006) 406-415 (in Polish).
  • [11] K. Edalati, F. Akhlaghi, M. Nili-Ahmadabadi, Influence of SiC and FeSi addition on the characteristics of gray cast iron melts poured in different temperatures, Journal of Materials Processing Technology 160 (2005) 183-187.
  • [12] L. Álvarez, С J. Luis, I. Puertas, Analysis of the influence of chemical composition on the mechanical and metallurgical properties of engine cylinder blocks in grey cast iron, Journal of Materials Processing Technology 153-154 (2004) 1039-1044.
  • [13] M. Stawarz, J. Szajnar, Electromagnetic stirring influence on graphite morphology of gray cast iron, Archives of Foundry 6/22 (2006) 461-466 (in Polish).
  • [14] E Guzik, M. Porębski, H. Woźnica, J. Szala, The structure of certain inoculants for use in high-quality cast iron, Proceedings of the Worldwide Congress on Materials and Manufacturing Engineering and Technology COMMENT’2005, Gliwice-Wisła. 2005, 29-32.
  • [15] M. Wilk, M. S. Soiński. P. Mierzwa. Mechanical properties of ductile iron treated with various inoculants, Archives of Foundry 6/18 (2006) 33-38 (in Polish).
  • [16] B. Kalandyk, The influence of the deoxidation and modification on the morphology of non-metallic inclusion in the carbon cast steels, .Archives of Foundry 6/18 (2006) 413-418 (in Polish).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BOS3-0017-0009
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