Evaluation of the Effect of the Cr, Mo, V and W Content in an Al-Si Alloy Used for Pressure Casting on its Proof Stress

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

Identyfikatory

DOI

10.24425/122510

• Języki publikacji: EN

Abstrakty

EN

The study presents the results of the application of a statistical analysis for the evaluation of the effect of high-melting additions introduced into a pressure cast Al-Si alloy on the obtained level of its proof stress R_p0.2. The base Al-Si alloy used for the tests was a typical alloy used for pressure casting grade EN AC-46000. The base alloy was enriched with high-melting additions, such as: Cr, Mo, V and W. The additions were introduced into the base Al-Si alloy in all the possible combinations. The content of the particular high-melting addition in the Al-Si alloy was within the scope of 0.05 to 0.50%. The investigations were performed on both the base alloy and alloy with the high-melting element additions. Within the implementation of the studies, the values of R_p0.2 were determined for all the considered chemical compositions of the Al-Si alloy. A database was created for the statistical analysis, containing the independent variables (chemical composition data) and dependent variables (examined R_p0.2 values). The performed statistical analysis aimed at determining whether the examined high-melting additions had a significant effect on the level of R_p0.2 of the Al-Si alloy as well as optimizing their contents in order to obtain the highest values of the Al-Si alloy's proof stress R_p0.2. The analyses showed that each considered high-melting addition introduced into the Al-Si alloy in a proper amount can cause an increase of the proof stress R_p0.2 of the alloy, and the optimal content of each examined high-melting addition in respect of the highest obtained value of R_p0.2 equals 0.05%.

Słowa kluczowe

EN

mechanical properties; statistical method; multicomponent alloy; Al-Si alloy; pressure casting; proof stress

PL

właściwości mechaniczne; metoda statystyczna; stop wieloskładnikowy; stop Al-Si; odlewanie ciśnieniowe

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 18, iss. 2
• Strony: 105--111
• Opis fizyczny: Bibliogr. 24 poz., rys., tab., wykr.

Twórcy

autor

Szymczak T.

• Department of Materials Engineering and Production Systems, Lodz University of Technology, Stefanowskiego 1/15 Street, 90-924 Łódź, Poland

autor

Szymszal J.

• Production Engineering Department, Silesian University of Technology, ul. Krasińskiego 8, 40-019 Katowice, Poland

autor

Gumienny G.

• Department of Materials Engineering and Production Systems, Lodz University of Technology, Stefanowskiego 1/15 Street, 90-924 Łódź, Poland

Bibliografia

• [1] 48th Census of World Casting Production. Modern Castasting, December 2014, 17-21.
• [2] 49th Census of World Casting Production. Modern Castasting, December 2015, 26-31.
• [3] 50th Census of World Casting Production. Modern Castasting, December 2016, 25-29.
• [4] Pezda, J. (2015). Effect of the T6 heat treatment on change of mechanical properties of the AlSi12CuNiMg alloy modified with strontium. Archives of Metallurgy and Materials. 60(2), 627-632.
• [5] Pezda, J. (2014). Modification of the EN AC-42000 aluminium alloy with use of multicomponent electrolysis of sodium salt. Metalurgija. 53(1), 55-58.
• [6] Wróbel, T. & Szajnar, J. (2013). Modification of pure Al and AlSi2 alloy primary structure with use of electromagnetic stirring method. Archives of Metallurgy and Materials. 58(3), 941-944.
• [7] Piątkowski, J., Gajdzik, B. & Matuła, T. ( 2012). Crystallization and structure of cast A390.0 alloy with melt overheating temperature. Metalurgija. 51(3), 321-324.
• [8] Pietrowski, S. (2001). Silumins. Łódź. Publishing house of Lodz University of Technology.
• [9] Jiang, W., Fan, Z., Dai, Y. & Li, C. (2014). Effects of rare earth elements addition on microstructures, tensile properties and fractography of A357 alloy. Materials Science and Engineering A. 597(3), 237-244.
• [10] Smith, J.F., Bailey, D.M. & Carlson, O.N. (1982). The Cr-V (Chromium-Vanadium) System. Bulletin of Alloy Phase Diagrams. 2(4), 469-473.
• [11] Venkataraman, M. & Neumann, J.P. (1987). The Cr-Mo (Chromium-Molybdenum) System. Bulletin of Alloy Phase Diagrams. 8(3), 216-220.
• [12] Zheng, F., Argent, B.B. & Smith, J.F. (1999). Thermodynamic Computation of the Mo-V Binary Phase Diagram. Journal of Phase Equilibria. 20(4), 370-372.
• [13] Okamoto, H. (2008). Al-Cr (Aluminum-Chromium). Journal of Phase Equilibria and Diffusion. 29(1), 111-112. DOI: 10.1007/s11669-007-9225-4.
• [14] Alloy Phase Diagrams. ASM Handbook Vol. 3. 1992.
• [15] Okamoto, H. (2010). Al-Mo (Aluminum-Molybdenum). Journal of Phase Equilibria and Diffusion. 31(5), 492–493.
• [16] 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.
• [17] 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.
• [18] Szymczak, T., Gumienny, G. & Pacyniak, T. (2016). Effect of molybdenum on the crystallization, microstructure and properties of silumin 226. Transactions of the Foundry Research Institute. 56(3), 193-204.
• [19] 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.
• [20] PN-EN 1706:2011. Aluminum and aluminum alloys. Castings. The chemical composition and mechanical properties. (in Polish).
• [21] Kleinbaum, D.G., Kupper, L.L., Nizan, A. (1998). Applied Regression Analysys and Other Multivariable Methods. (3rd. ed.). Duxbury Press, Pacific Grove.
• [22] Altman, D.G. (1991). Practical statistics for medical research. London: Chapman and Hall.
• [23] Armitage, P., Berry, G., Matthews, J.N.S. (2002). Statistical methods in medical research. (4th ed.). Blackwell Science.
• [24] Dobosz, M. (2004). Computer-aided statistical analysis of research results. Warsaw: Academic Publishing House EXIT.

Uwagi

PL

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