Optimization of Squeeze Parameters and Modification of AlSi7Mg Alloy

Open access


The paper present the examination results concerning mechanical properties of castings made of AlSi7MG alloy in correlation both with the most significant squeeze casting parameters and with the modification treatment. Experiments were planned and held according to the 23 factorial design. The regression equations describing the influence of the squeeze pressure, the mould temperature, and the quantity of strontium modifier on the strength and elongation of the examined alloy were obtained. It was found that the main factor controlling the strength increase is the squeeze pressure, while the plasticity (A5) of the alloy is affected most advantageously by modification. The application of modification treatment in squeeze casting technology enables for production of the slab-type castings made of AlSi7Mg alloy exhibiting strength at the level of 230 MPa and elongation exceeding 14%.

[1] Perzyk, M., Waszkiewicz, S., Kaczorowski, M., Jopkiewicz, A. (2000). Foundry Engineering. Warsaw: WNT.

[2] Sobczak, J. (1993). Theoretical and practical basis for squeeze casting of non-ferrous metals. National ResearchInstitute of Foundry. Spec. 41.

[3] Kim, S. W., Kim, D. Y., Kim, W. G. & Woo, K. D. (2001). The study on characteristics of heat treatment of the direct squeeze cast 7075 wrought Al alloy. Materials Science andEngineering. 304-306(A), 721-726.

[4] Yang, L. J. (2003). The effect of casting temperature on the properties of squeeze cast aluminium and zinc alloys. Journal of Materials Processing Technology. 140, 391-396.

[5] Yue, T. M. (1997). Squeeze casting of high-strength aluminium wrought alloy AA7010. Journal of MaterialsProcessing Technology. 66, 179-185.

[6] Skolianos, S.M., Kiourtsidis, G. & Xatzifotiou, T. (1997). Effect of applied pressure on the microstructure and mechanical properties of squeeze-cast aluminum AA6061 alloy. Materials Science and Engineering. 231(A), 17-24.

[7] Abou El-khair, M. T. (2005). Microstructure characterization and tensile properties of squeeze-cast AlSiMg alloys, Materials Letters. 59, 894-900.

[8] Youn, S.W., Kang, C.G. & Seo, P.K. (2004). Thermal fluid/solidification analysis of automobile part by horizontal squeeze casting process and experimental evaluation. Journal of Materials Processing Technology. 146, 294-302.

[9] Hajdasz, M. (1993). Barocrystallization of metal alloys. Archives of Machine Construction Technologies. 12, 45-50.

[10] Hajdasz, M. (1993). Squeeze casting. Foundry Review, 43, 110-113.

[11] Zyska, A., Konopka, Z., Łągiewka, M. & Nadolski, M. (2010). Porosity of AlCu4 alloy squeeze castings. Žilinská univerzita. Strojnicka fakulta. Technológ. 2, april, 254-259.

[12] Lee, K., Kwon, Y.N. & Lee, S. (2008). Effects of eutectic silicon particles on tensile properties and fracture toughness of A356 aluminum alloys fabricated by low-pressure-casting, casting-forging, and squeeze-casting processes. Journal ofAlloys and Compounds. 461, 532-541.

[13] Lipiński, T. (2006). Ekological modyfication of Ak7 alloy. Archives of Foundry Engineering. 6, 91-96.

[14] Pezda, J. (2007). Continuous modification of AK11 silumin with multicomponent salt on base of NaCl. Archives ofFoundry Engineering. 7, 151-154.

[15] Piątkowski, J., Bińczyk, F. & Smoliński, A. (2004). The complex modification of AlSi7Mg alloy. Archives ofFoundry Engineering. 4, 381-386.

[16] Zyska, A., Konopka, Z., Łągiewka, M. & Nadolski, M. (2011). The influence of modification and squeeze casting on properties of AlSi11 alloy castings. Archives of FoundryEngineering. 11, 153-156.

Archives of Foundry Engineering

The Journal of Polish Academy of Sciences

Journal Information

CiteScore 2016: 0.42

SCImago Journal Rank (SJR) 2016: 0.192
Source Normalized Impact per Paper (SNIP) 2016: 0.316


All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 111 111 10
PDF Downloads 34 34 2