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Influence of Sand Fluidization on Structure and Properties of Aluminum Lost Foam Casting

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Języki publikacji
EN
Abstrakty
EN
The article presents investigation results of the effect of sand fluidization on the structure and mechanical properties of AlSi9 aluminum alloy. Castings were made by lost foam casting process with sand fluidization in mold at the stages of their solidification and cooling. Sand fluidization was achieved by blowing sand bed with compressed air in a foundry container. The metallographic study was carrying out on samples cut from different sections of the castings. Mechanical properties were determined on specimens made from cast samples. Microstructural analysis showed that sand fluidization increases the cooling rate, as a result, the main microstructural components of the alloy – SDAS, eutectic silicon and needles of the rich-iron phase – decrease. Moreover, in different sections of the casting structure is more uniform. With an increasing the air flow rate, a greater refinement of the structure is observed. Through the use of sand fluidization, the mechanical properties of LFC aluminum alloys increase to the level of gravity die castings.
Rocznik
Strony
122--126
Opis fizyczny
Bibliogr. 8 poz., fot., rys., tab.
Twórcy
  • National Academy of Sciences of Ukraine, Physico-Technological Institute of Metals and Alloys, Ukraine, kpb.ptima@gmail.com
Bibliografia
  • [1] Totten, G.E., MacKenzie, D.S. (Eds.). (2003). Handbook of Aluminum: Vol. 1: Physical Metallurgy and Processes. New York: Marcel Dekker Inc.
  • [2] Niakan, A.A., Idris, M.H., Karimian, M. & Ourdjini, A. (2012). Effect of Pressure on Structure and Properties of Lost Foam Casting of Al-11Si Cast Alloy. Applied Mechanics and Materials. 110-116, 639-643. DOI: 10.4028/www.scientific. net/AMM.110-116.639.
  • [3] Jiang, W., Chen, X., Wang, B., Fan, Z. & Wu, H. (2016). Effects of vibration frequency on microstructure, mechanical properties, and fracture behavior of A356 aluminum alloy obtained by expendable pattern shell casting. The International Journal of Advanced Manufacturing Technology. 83, 167-175. DOI: 83. 10.1007/s00170-015-7586-0.
  • [4] Zhao, Z. & Fan, T. (2014). Influence on the Microstructures and Properties of A356 with Vibration Pressure in Lost Form Casting. Applied Mechanics and Materials. 685, 7-10. DOI: 10.4028/www.scientific.net/AMM.685.7.
  • [5] Kaliuzhnyi, P., Holofaiev, A. & Hutko, Y. (2015). UA Patent No. 97151. Kyiv.
  • [6] Ragab, Kh. A., Samuel, A.M., Al-Ahmari, A.M.A., Samuel, F.H. & Doty, H.W. (2011). Influence of fluidized sand bed heat treatment on the performance of Al-Si cast alloys. Material and Design. 32, 1177-1193. DOI: 10.1016/j.matdes. 2010.10.023.
  • [7] Shalevska, I. & Kaliuzhnyi, P. (2015). Fluidized bed application in technological process of casting production in vacuumized molds. Metal and casting of Ukraine. 4, 19-21. (In Russian).
  • [8] Hren, I., Svobodova, J., Michna, Š. (2018). Influence of Al5FeSi Phases on the Cracking of Castings at Al-Si Alloys. Archives of Foundry Engineering. 18(4), 120-124. DOI: 10.24425/afe.2018.125180.
Uwagi
PL
Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-c2df94f0-03a5-4662-81c8-4f4fa0f64f86
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