Czasopismo
2006
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Vol. 14, nr 1-2
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31--36
Tytuł artykułu
Autorzy
Wybrane pełne teksty z tego czasopisma
Warianty tytułu
Języki publikacji
Abstrakty
Purpose: The purpose of this paper is presentation of the results that concerned the influence of morphology of eutectic silicon crystals on mechanical properties, especially on the cleavage fracture toughness of AlSi5Cu1 alloy. Design/methodology/approach: Microscopic studies – optical microscope NIKON 300 and quantitative analysis of geometrical parameters of microstructure – image analysis program APHELION, tensile and fracture toughness tests – testing machine INSTRON 8810. Findings: The sizes of silicon crystals and values of yield strength, tensile strength and plane strain fracture toughness have been determined. Relationships between mechanical properties and silicon crystals size were described using Hall-Petch equation. It was found that a decrease in silicon crystals causes an increasing in strength and in fracture toughness. Practical implications: This paper is part of the previous author’s investigations which results in modification of the casting technology of turboblower compressor impellers. Originality/value: The microscopic observations indicated that alloy cracking begins with nucleation and growth of micro-cracks in the silicon crystals of large size, in orthogonal plane to tension direction. The hard and brittle silicon crystals are very strong barriers for slip in the stressed alloy.
Rocznik
Tom
Strony
31--36
Opis fizyczny
Bibliogr. 22 poz., rys., tab., wykr.
Twórcy
autor
- Rzeszów University of Technology, ul. W. Pola 2, 35-959 Rzeszów, Poland, mwierzb@prz.edu.pl
autor
- Rzeszów University of Technology, ul. W. Pola 2, 35-959 Rzeszów, Poland
Bibliografia
- [1] E. de Feritas., M. Ferrante: Proc. Int. Conf. "Achievements in Mechanical& Materials Engineering", Gliwice-Zakopane (2003), 327-330.
- [2] L.A. Dobrzański, W. Kasprzak, J.H. Sokołowski: Proc. Int. Conf. "Achievements in Mechanical& Materials Engineering", Gliwice-Zakopane (2003), 225-228.
- [3] M.L. Bernsztejn: Struktura i własności mechaniczne metali. WNT, Warszawa 1973.
- [4] M.A. Przystupa, T.H. Courtney: Met. Trans., 13A(1982), 873.
- [5] M. Warmuzek, G. Mrówka-Nowotnik, J. Sieniawski: Journal of Materials Processing Technology 157-158(2004), 624-632.
- [6] G. Mrówka-Nowotnik, J. Sieniawski: Journal of Materials Processing Technology 162-163(2005,) 367-372.
- [7] M. Warmuzek, K. Rabczak, J. Sieniawski: Journal of Materials. Processing Technology 162-163(2005), 422-428.
- [8] R.W. Hertzberg: John Wiley and Sons, New York, Chichester, Brisbane, Singapore, 1989.
- [9] R.M. Pillai, K.S. Biju-Kumar, B. C. Pai: Journal of Materials Processing Technology 146(2004), 338-348.
- [10] M. Warmuzek, J. Sieniawski, K. Wicher, G. Mrówka: Proc. Int. Conf. "Achievements in Mechanical& Materials Engineering", Gliwice-Zakopane (2003), 1017-1022.
- [11] M. Warmuzek, G. Mrówka , J. Sieniawski: Proc. Int. Conf. "Achievements in Mechanical& Materials Engineering", Gliwice-Zakopane (2002), 601-604.
- [12] G. Mrówka - Nowotnik, J. Sieniawski: Proc. Int. Conf. "Achievements in Mechanical& Materials Engineering", Gliwice-Wisła (2005), 447-450.
- [13] R. Dasgupta: Journal of Materials Processing Technology 72(1997), 380-384.
- [14] P.N. Crepeau, S.D. Antolovich, J.A. Warden: AFS Trans., 98(1990), 813.
- [15] C.H. Caceres, Q.G. Wang: Casting Alloys. Intern. J. Cast Metals Rev., 9(1996), 157.
- [16] O. Vorren, T.B. Pedersen: AFS Trans. 92(1984), 549.
- [17] H.M. Tensi, J. Hogerl: Metall, 48(1994), 776.
- [18] M. Wierzbińska, J. Sienawski: Int. Journ. of Cast Metals Research, 17(2004)5, 267.
- [19] M. Wierzbińska: Doctor’s thesis, Rzeszów University of Technology, Rzeszów, 2003.
- [20] M. Wierzbińska, J. Sienawski: Inżynieria Materiałowa, 144(2005)1, 11.
- [21] W.Volk: Statystyka stosowana dla inżynierów. WNT, Warszawa 1973.
- [22] D.A. Curry, J.F. Knott: Metal Sci. Journ., 6(1979), 341.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-cd05c2f7-92ef-4fc7-a8e0-610eb8dbb85b