Effect of Alloy Additions on the Structure and Mechanical Properties of the AlSi7Mg0.3 Alloy

• Autorzy: Pisarek B. P. , Rapiejko C. , Szymczak T. , Pacyniak T.

Identyfikatory

DOI

10.1515/afe-2017-0025

• Języki publikacji: EN

Abstrakty

EN

The study presents the results of the investigations of the effect of Cu, Ni, Cr, V, Mo and W alloy additions on the microstructure and mechanical properties of the AlSi7Mg0.3 alloy. The examinations were performed within a project the aim of which is to elaborate an experimental and industrial technology of producing elements of machines and devices complex in their construction, made of aluminium alloys by the method of precision investment casting. It was demonstrated that a proper combination of alloy additions causes the crystallization of complex intermetallic phases in the silumin, shortens the SDAS and improves the strength properties: Rm, Rp0.2,HB hardness. Elevating these properties reduces At, which, in consequence, lowers the quality index Q of the alloy of the obtained casts. Experimental casts were made in ceramic moulds preliminarily heated to 160 °C, into which the AlSi7Mg0.3 alloy with the additions was cast, followed by its cooling at ambient temperature. With the purpose of increasing the value of the quality index Q, it is recommended that the process of alloy cooling in the ceramic mould be intensified and/or a thermal treatment of the casts be performed (ageing) (T6).

Słowa kluczowe

EN

innovative casting technologies; innovative materials; precision investment casting; aluminium alloys; alloy additions; SDAS; quality index

PL

innowacyjne technologie odlewnicze; materiały odlewnicze; odlew precyzyjny; stopy aluminium; dodatki stopowe; SDAS; indeks jakości

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2017
• Tom: Vol. 17, iss. 1
• Strony: 137--142
• Opis fizyczny: Bibliogr. 15 poz., rys., tab., wykr.

Twórcy

autor

Pisarek B. P.

• Lodz Univeristy of Technology, Department of Materials Engineering and Production Systems, ul. Stefanowskiego 1, 90-924 Łódź, Poland

autor

Rapiejko C.

• Lodz Univeristy of Technology, Department of Materials Engineering and Production Systems, ul. Stefanowskiego 1, 90-924 Łódź, Poland

autor

Szymczak T.

• Lodz Univeristy of Technology, Department of Materials Engineering and Production Systems, ul. Stefanowskiego 1, 90-924 Łódź, Poland

autor

Pacyniak T.

• Lodz Univeristy of Technology, Department of Materials Engineering and Production Systems, ul. Stefanowskiego 1, 90-924 Łódź, Poland

Bibliografia

• [1] PN-EN 1706:2011 Aluminum and aluminum alloys - Castings - Chemical composition and mechanical properties. (in Polish).
• [2] Pietrowski, S. (1996). Patent RP Nr. P-317492. Warszawa. Urząd Patentowy Rzeczypospolitej Polskiej.
• [3] Pietrowski, S., Szymczak, T., Siemińska-Jankowska, B. & Jankowski, A. (2010). Selected characteristic of silumins with additives of Ni, Cu, Cr, Mo, W and V. Archives of Foundry Engineering. 10(1), 107-126.
• [4] Pietrowski, S. & Szymczak, T (2010). Crystallization, microstructure and mechanical properties of silumins with micro-additions of Cr, Mo, W and V. Archives of Foundry Engineering. 10(2), 123-136.
• [5] Szymczak, T., Gumienny, G. & Pacyniak, T. (2015). Effect of Tungsten on the Solidification Process, Microstructure and Properties of Silumin 226. Transactions of Foundry Research Institute. 3, 3-14. DOI: 10.7356/iod.2015.09.
• [6] Szymczak, T., Gumienny, G. & Pacyniak, T. (2015). Effect of Vanadium and Molybdenum on the Crystallization, Microstructure and Properties of Hypoeutectic Silumin. Archives of Foundry Engineering. 15(4), 81-86.
• [7] Pisarek, B.P. (2007). The crystallization of the aluminium bronze with additions of Si, Cr, Mo and/or W. Archives of Materials Science and Engineering. 28(8), 461-466.
• [8] Pisarek, B.P. (2013). Aluminium Bronze Containing Cr, Mo and/or W with High Resistance to Wear Łódź. Scientific Bulletin of the Lodz University of Technology No. 1141, Wydawnictwo Politechniki Łódzkiej. (in Polish).
• [9] Gumienny, G. (2013). Carbidic Bainitic and Ausferritic Ductile Cast Iron. Archives of Metallurgy and Materials, 58(4), 1053-1058.
• [10] Fintová, S. Konečná, R. & Nicoletto, G. (2009). Statistical Description of Largest Pore Size in Modified Al-Si Alloys. Materials Engineering. 16(3), 24-28.
• [11] Fintová, S., Konečná, R. & Nicoletto, G. (2013).. Microstructure, Defects and Fatigue Behavior of Cast AlSi7Mg Alloy. Acta Metallurgica Slovaca. 19(3), 223-231.
• [12] Chen, R., Shi, Y., Xu, Q. & Liu, B. (2014). Effect of cooling rate on solidification parameters and microstructure of Al−7Si−0.3Mg−0.15Fe alloy. Trans. Nonferrous Met. Soc. China. 24, 1645-1652.
• [13] Drouzy, M., Jacob, S. & Richard, M. (1980). Interpretation of Tensile Results by Means of Quality Index and Probable Yield Strength. AFS Int. Cast Met. J. 5, 43-50.
• [14] Rapiejko, C., Pisarek, B., Czekaj, E. & Pacyniak, T. (2014).. Analysis of the Crystallization of AZ91 Alloy by Thermal and Derivative Analysis Method Intensively Cooled in Ceramic Shell. Archives of Foundry Engineering. 14(1), 97-102. DOI: 10.2478/afe-2014-0022.
• [15] PN-EN ISO 6892-1:2010 Metals - Tensile testing - Part 1: Method of testing at room temperature. (in Polish).

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).