DEVELOPMENT OF STRENGTH AND ELECTRICAL PROPERTIES OF Al-Si-Mg CASTING ALUMINUM ALLOYS WITH AN MG CONTENT OF 1 wt%
DOI:
https://doi.org/10.7494/mafe.2016.42.1.47Keywords:
cast aluminum alloys, homogenization, quench, artificial aging, Brinell hardness, electrical conductivityAbstract
Silumins (i.e., alloys where the main alloy additive is silicon) are the largest casting aluminum alloy group. Materials of this kind are characterized by high strength properties, high corrosion resistance, and low density, which make it possible to use them for construction purposes. A new group of developed properties typical for casting silumins are electrical and thermal conductivity. Thermal and electrical conductivity can be optimized by the suitable selection of chemical composition of the alloy, in the process of precipitation hardening, or by means of a combination of both. The present paper includes test results of the strength and electrical properties of AlSiMg casting aluminum alloys. The alloys that were subject to testing were AlSi5Mg1, AlSi7Mg1, and AlSi11Mg1. Heat treatment included homogenization at a temperature of 535°C over a time periodof 8 h, quenched, and artificial aging. The strength tests involved a Brinell hardness measurement as well as an electrical properties test involving electrical conductivity measurement tests.
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References
Totten G.E., MacKenzie D.S.: Handbook of Aluminum. Volume 1: Physical Metallurgy and Processes. MARCEL DEKKER, New York 2003
Polmer I.J.: Light Alloys. From Traditional Alloys to Nanocrystals. Elsevier 2006
Hatch J.E.: Aluminum Properties and Physical Metallurgy. ASM 1984
Kaufman J.G., Rooy E.R.: Aluminum Alloy Castings. Properties, Processes and Applications. ASM International 2004
Mulazimoglu M.H., Drew R.A.L., Gruzelski J.E.: Electrical conductivity of aluminium-rich Al-Si-Mg alloys. Journal of Materials Science Letters, 8 (1989), 297–300
Yıldırım M., Ozyurek D.: The effects of Mg amount on the microstructure and mechanical properties of Al-Si-Mg alloys. Materials and Design, 51 (2013), 767–774
PN-EN 1706: 2011 Aluminium i stopy aluminium – Odlewy – Skład chemiczny i własności mechaniczne [Aluminium and aluminium alloys – Castings – Chemical composition and mechanical properties]
http://www.totalmateria.com [1.05.2015]
Wiecheć J., Uliasz P., Knych T., Piwowarska-Uliasz M.: Odlewnicze stopy aluminium typu AlSiMg przeznaczone na cele elektryczne. Rudy i Metale Nieżelazne, 6 (2013), 333–338
Wiecheć J., Uliasz P., Knych T., Piwowarska-Uliasz M., Jarosz R.: The influence of chemical composition and parameters of heat treatment on the mechanical properties and electrical conductivity in hypoeutectic
aluminium silicon alloys. Archives of Foundry Engineering, 13, 3 (2013), 179–184
