Statistical Methods Used in the Assessment of the Influence of the Al-Si Alloy's Chemical Composition on its Properties

• Autorzy: Szymczak T. , Szymszal J. , Gumienny G.

Identyfikatory

DOI

10.24425/118838

• Języki publikacji: EN

Abstrakty

EN

The paper presents the results of the application of a statistical analysis to evaluate the effect of the chemical composition of the die casting Al-Si alloys on its basic mechanical properties. The examinations were performed on the hypoeutectic Al-Si alloy type EN AC-46000 and, created on its basis, a multi-component Al-Si alloy containing high-melting additions Cr, Mo, W and V. The additions were introduced into the base Al-Si alloy in different combinations and amounts (from 0,05% to 0,50%). The tensile strength Rm; the proof stress Rp0,2; the unit elongation A and the hardness HB of the examined Al-Si alloys were determined. The data analysis and the selection of Al-Si alloy samples without the Cr, Mo, W and V additions were presented; a database containing the independent variables (Al-Si alloy's chemical composition) and dependent variables (Rm; Rp0,2; A and HB) for all the considered variants of Al-Si alloy composition was constructed. Additionally, an analysis was made of the effect of the Al-Si alloy's component elements on the obtained mechanical properties, with a special consideration of the high-melting additions Cr, Mo, V and W. For the optimization of the content of these additions in the Al-Si alloy, the dependent variables were standardized and treated jointly. The statistical tools were mainly the multivariate backward stepwise regression and linear correlation analysis and the analysis of variance ANOVA. The statistical analysis showed that the most advantageous effect on the jointly treated mechanical properties is obtained with the amount of the Cr, Mo, V and W additions of 0,05 to 0,10%.

Słowa kluczowe

EN

mechanical properties; statistical methods; multicomponent alloys; pressure die casting

PL

właściwości mechaniczne; metody statystyczne; stopy wieloskładnikowe; odlewanie ciśnieniowe

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 18, iss. 1
• Strony: 203--211
• Opis fizyczny: Bibliogr. 16 poz., tab., wykr.

Twórcy

autor

Szymczak T.

• Lodz University of Technology, Department of Materials Engineering and Production Systems, Łódź, Poland

autor

Szymszal J.

• Silesian University of Technology, Production Engineering Department, Katowice, Poland

autor

Gumienny G.

• Lodz University of Technology, Department of Materials Engineering and Production Systems, Łódź, Poland

Bibliografia

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• [2] Murray, J.L. (1998). The Al-Cr (aluminum-chromium) system. Journal of Phase Equilibria. 19(4), 367.
• [3] Okamoto, H. (2012). Al-V (Aluminum-Vanadium). Journal of Phase Equilibria and Diffusion. 33(6), 491-491. DOI: 10.1007/s11669-012-0090-4.
• [4] Murray, J. L. (1989). Al-V (aluminum-vanadium). Bulletin of Alloy Phase Diagrams. 10(4), 351-357.
• [5] Alloy Phase Diagrams. ASM Handbook Vol. 3. 1992.
• [6] Okamoto, H. (2010). Al-Mo (Aluminum-Molybdenum). Journal of Phase Equilibria and Diffusion. 31(5), 492–493.
• [7] Schuster, J.C. & Ipser, H. (1991). The Al-Al8Mo3 Section of the Binary System Aluminum-Molybdenum. Metallurgical and Materials Transactions A. 22(8), 1729-1736.
• [8] Saunders, N. (1997). The Al-Mo system (aluminum-molybdenum). Journal of Phase Equilibria. 18(4), 370.
• [9] Kaufman, L. & Nesor, H. (1978). Coupled phase diagrams and thermochemical data for transition metal binary systems — V. Calphad. 2(4), 325-348.
• [10] Szymczak, T., Gumienny, G., Stasiak, I. & Pacyniak, T. (2017). Hypoeutectic Al-Si Alloy with Cr, V and Mo to Pressure Die Casting. Archives of Foundry Engineering. 17(1), 153-156.
• [11] Szymczak, T., Gumienny, G. & Pacyniak, T. (2015). Effect of tungsten on the solidification process, microstructure and properties of silumin 226. Transactions of the Foundry Research Institute. 55(3), 3-14.
• [12] Szymczak, T., Gumienny, G. & Pacyniak, T. (2016). Hypoeutectic silumin to pressure die casting with vanadium and tungsten. Archives of Metallurgy and Materials. 61(4), 2103-2110.
• [13] PN-EN 1706:2011. Aluminum and aluminum alloys. Castings. The chemical composition and mechanical properties. (in Polish).
• [14] Kleinbaum, D.G., Kupper L.L., Nizan, A. (1998). Applied Regression Analysys and Other Multivariable Methods. (3rd. ed.). Duxbury Press, Pacific Grove.
• [15] Altman D.G. (1991). Practical statistics for medical research. London: Chapman and Hall.
• [16] Armitage, P., Berry, G., Matthews, J.N.S. (2002). Statistical methods in medical research. (4th ed.). Blackwell Science.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).