Review of inoculation methods of pure aluminium primary structure

• Autorzy: Wróbel T.
• Języki publikacji: EN

Abstrakty

EN

Purpose: In paper the problem concerning inoculation of pure aluminium primary structure, which is realized mainly by intensification of liquid metal movement in mould by use of rotating electromagnetic field is presented. Design/methodology/approach: In paper the influence of electromagnetic field of type rotating, rotating with reverse and rotating with variable frequency, which generating forced movement during the crystallization of liquid aluminium in mould is presented. Effect of structure refinement obtained by influence of electromagnetic field was compared with refinement obtained by use of traditional inoculation, which consists of introducing of additions in form of titanium, boron and carbon to the metal bath. In paper the results of author own researches, supplemented by literature data are mainly presented. Findings: The results of studies and their analysis show possibility of effective refinement of pure aluminium primary structure, only with use of rotating electromagnetic field. Research limitations/implications: In further research, author of this paper is going to apply of introduced method of aluminium casting with use of electromagnetic field in continuous casting stand. Practical implications: The work presents refinement of structure method which is particularly important in continuous and semi – continuous casting where products are used for plastic forming. Originality/value: The value of this paper resides in new effective method of inoculation of pure Al, which was realized only by use of electromagnetic field.

Słowa kluczowe

EN

casting; inoculation; aluminium; ingot

PL

odlewanie; modyfikacja; aluminium; wlewki

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2011
• Tom: Vol. 50, nr 2
• Strony: 110--119
• Opis fizyczny: Bibliogr. 21 poz.

Twórcy

autor

Wróbel T.

• Foundry Department, Silesian University of Technology, ul. Towarowa 7, 44-100 Gliwice, Poland,

Bibliografia

• [1] E. Fraś, Crystallization of metals, WNT, Warsaw, 2003 (in Polish).
• [2] B. Chalmers, The structure of ingots, Journal of the Australian Institute of Metals 8 (1963) 255-262.
• [3] J. Adamczyk, Development of the microalloyed constructional steels, Journal of Achievements in Materials and Manufacturing Engineering 14 (2006) 9-20.
• [4] T. Wróbel, Inoculation of pure aluminum structure with use of electromagnetic field, Tendency of Optimization of Production Systems in Foundry - Monograph, chapter 18, 2010, 253-262 (in Polish).
• [5] J. Szajnar, T. Wróbel, Inoculation of pure aluminum with an electromagnetic field, Journal of Manufacturing Processes 2 (2008) 74-81.
• [6] S. Jura, Modeling research of inoculation process in metals, Publishers of Silesian University of Technology, Gliwice, 1968 (in Polish).
• [7] J. Fjellstedt, A. Jarfors, T. El-Benawy, Experimental investigation and thermodynamic assessment of the Al-rich side of the Al-B system, Materials and Design 6 (2001) 443-449.
• [8] M. Guzowski, G. Sigworth, D. Sentner, The role of boron in the grain refinement of aluminum with titanium, Metallurgical and Materials Transactions A 5 (1987) 603-619.
• [9] T. Sritharan, H. Li, Optimizing the composition of master alloys for grain refining aluminium, Scripta Materialia 9 (1996) 1053-1058.
• [10] Z. Zamkotowicz, T. Stuczński, B. Augustyn, M. Lech-Grega, W. Wężyk, Sedimentation of intermetallic compounds in liquid aluminum alloys of type AlSiCu(Ti), Proceedings of the Scientific Conference “Founding of Nonferrous Metals - Science and Technology”, 2003, 77-82 (in Polish).
• [11] S. Pietrowski, Modification of AK20 silumin with use of Ti, B and P admixtures, Archives of Foundry 43 (2000) 451- 456 (in Polish).
• [12] S. Pietrowski, Complex silumins, Journal of Achievements in Materials and Manufacturing Engineering 24/1 (2007) 101-105.
• [13] M. Krupiński, K. Labisz, L.A. Dobrzański, Z.M. Rdzawski, Derivative thermo-analysis application to assess the cooling rate influence on the microstructure of Al-Si alloy cast, Journal of Achievements in Materials and Manufacturing Engineering 38/2 (2010) 115-122.
• [14] L.A. Dobrzański, M. Krupiński, B. Krupińska, Structure analysis of Al cast alloy, Journal of Achievements in Materials and Manufacturing Engineering 27/1 (2008) 23-26.
• [15] A. Whitehead, Grain refiners (modifiers) of the Al-Ti-C type - their advantages and application, Foundry Review 5 (2000) 179-182.
• [16] H. Li, T. Sritharan, Y. Lam, N. Leng, Effects of processing parameters on the performance of Al grain refinement master alloy Al-Ti and Al-B in small ingots, Journal of Materials Processing Technology 66/1-3 (1997) 253-257.
• [17] J. Donnay, H. Ondik, Crystal date - Determinative Tables, NSRDS - JCPDS, 1973.
• [18] O. Keles, M. Dundar, Aluminium foil: its typical quality problems and their causes, Journal of Materials Processing Technology 186 (2007) 125-130.
• [19] R. Doherty, H. Lee, E. Feest, Microstructure of stir-cast metals, Materials Science and Engineering 65 (1984) 181-189.
• [20] J. Szajnar, M. Stawarz, T. Wróbel, W. Sebzda, B. Grzesik, M. Stępień, Influence of continuous casting conditions on grey cast iron structure, Archives of Materials and Engineering 42/1 (2010) 45-52.
• [21] J. Szajnar, T. Wróbel, Exogeneous inoculation of pure Al with use of electromagnetic field, Journal of Achievements in Materials and Manufacturing Engineering 43/1 (2010) 448-454.