Inoculation of pure aluminium structure with Ti+B addition in impulse magnetic field

• Autorzy: Szajnar J. , Stawarz M. , Wróbel T.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The main aim of investigations was the reduction of grain size and unification of structure for clean metal casting by introduction of small amount of inoculant with impulse magnetic field. Design/methodology/approach: Experimental plan was planed on the basis of statistical factor design on two levels for three variables (pouring parameters). The equiaxed crystals zone content was calculated by computer program to processing and image analysis after metallographic research. Findings: The results of study show relationship between area of equiaxial zone and pouring parameters. Research limitations/implications: Towards lack of resolute relations between casting parameters and structure was selected statistical analysis to determine these relations using stepwise regression. Practical implications: The work presents refinement of structure methods which are particularly important in continuous and semi-continuous casting where products are used for plastic forming. Large columnar crystals zone result in forces extrusion rate reduction and during the ingot rolling delamination of external layers can occur. Originality/value: The value of this paper resides in coupling of two refinement of structure methods. The first method is internal factor - inoculation with Ti+B and the second method is external factor - influence of electromagnetic field on crystallization process.

Słowa kluczowe

EN

magnetic field; inoculation; aluminium; titanium; boron

PL

pole magnetyczne; inokulacja; aluminium; glin; tytan; bor

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 14, nr 1-2
• Strony: 64--69
• Opis fizyczny: Bibliogr. 13 poz., rys., tab., wykr.

Twórcy

autor

Szajnar J.

• Division of Foundry, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Towarowa 7, 44-100 Gliwice, Poland

autor

Stawarz M.

• Division of Foundry, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Towarowa 7, 44-100 Gliwice, Poland

autor

Wróbel T.

• Division of Foundry, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Towarowa 7, 44-100 Gliwice, Poland

Bibliografia

• [1] J. Szajnar: The influence of rotating reversing magnetic field on solidification process of cast. Doctors thesis, Silesian University of Technology, Gliwice, 1986, (in polish).
• [2] J. Szajnar, J. Gawroński: The influence of electromagnetic stirring of a flowing metal stream on the cast structure, Conf. Proceedings 1st Inter. Scien. Confer. Achievements in Mechanical & Materials Engineering AMME, Polish Academy of Science, Silesian University of Technology Gliwice, Institute of Engineering Materials and Biomaterials, Gliwice, 1992, p.183.
• [3] J. Szajnar, J. Gawroński: The influence of stirring liquid metal in mould by means of magnetic field on the structure and the characteristic of castings, Conf. Proceedings 2nd Inter. Scien. Confer. Achievements in Mechanical& Materials Engineering AMME, Polish Academy of Science, Silesian University of Technology Gliwice, Institute of Engineering Materials and Biomaterials, Gliwice, 1993, p.209.
• [4] J. Szajnar, J. Gawroński: Method of aluminium and aluminium alloy casting. Patent PL nr 134 861, 5.03.1987 (in polish).
• [5] J. Szajnar, J. Gawroński, Cholewa M.: The influence of crystallizationconditions in forced convection on surface zone structure of casts, Conf. Proceedings 3ed Inter. Scien. Confer. Achievements in Mechanical& Materials Engineering AMME, Polish Academy of Science, Silesian University of Technology Gliwice, Institute of Engineering Materials and Biomaterials, Gliwice, 1994, p.329, (in polish).
• [6] J. Szajnar: The columnar to equiaxed transition at casting solidification with convection forced by rotating magnetic field, Scientific book of Silesian University of Technology, Mechanic, 138, Gliwice, 2001 (in polish).
• [7] J. Szajnar, Analysis of columnar crystals growth stability, Conf. Proceedings 8th Inter. Scien. Confer. Achievements in Mechanical& Materials Engineering AMME, Polish Academyof Science, Silesian University of Technology Gliwice, Institute of Engineering Materials and Biomaterials, Gliwice-Rydzyna, 1999, p.565.
• [8] J. Gawroński, J. Szajnar: Modyfication of columnar crystals structure under the influence of casting with forced convection, Conf. Proceedings 11th Inter. Scien. Confer. Achievements in Mechanical& Materials Engineering AMME, Polish Academy of Science, Silesian University of Technology Gliwice, Institute of Engineering Materials and Biomaterials, Zakopane, 2002, p.199, (in polish).
• [9] J. Szajnar: Simulation of liquid metal forced convection before paraboloidal solidification front, Conf. Proceedings 12th Inter. Scien. Confer. Achievements in Mechanical& Materials Engineering AMME, Polish Academy of Science, Silesian University of Technology Gliwice, Institute of Engineering Materials and Biomaterials, Zakopane, 2003, p.875, (in polish).
• [10] J. Szajnar: The columnar crystals shape and castings structure cast in magnetic field, Journal of Materials Processing Technology, 157-158, 2004, p.761.
• [11] P. Ponikwia: Aluminium alloys casting in impulse magnetic field. Masters thesis, Silesian University of Technology. Foundry Department, Gliwice, 2005, (in polish).
• [12] P. Kasperczyk: Project and performance of inductor to impulse reverse magnetic field creation. Masters thesis, Silesian University of Technology. Foundry Department, Gliwice, 2003, (in polish).
• [13] K. Miś: The influence of impulse magnetic field on casts structure. Masters thesis, Silesian University of Technology. Foundry Department, Gliwice, 2005, (in polish).