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Gas Blowing Ultrasonic Aluminium Degassing Assessment with the Reduced Pressure Test (RPT) Method

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Entrapped gases, solidification shrinkage and non-metallic compound formation are main sources of porosity in aluminium alloy castings. Porosity is detrimental to the mechanical properties of these castings; therefore, its reduction is pursued. Rotary degassing is the method mostly employed in industry to remove dissolved gases from aluminium melts, reducing porosity formation during solidification of the cast part. Recently, ultrasonic degassing has emerged as a promising alternative thanks to a lower dross formation and higher energy efficiency. This work aims to evaluate the efficiency of the ultrasonic degasser and compare it to a conventional rotary degassing technique applied to an AlSi10Mg alloy. Degassing efficiency was evaluated employing the reduced pressure test (RPT), where samples solidified under reduced pressure conditions are analysed. Factors affecting RPT were considered and temperature parameters for the test were established. The influence of ultrasonic degassing process parameters, such as degassing treatment duration and purging gas flow rate were studied, as well as treated aluminium volume and oxide content. Finally, ultrasonic degassing process was contrasted to a conventional rotary degassing technique, comparing their efficiency.
Rocznik
Strony
111--117
Opis fizyczny
Bibliogr. 20 poz., fot., tab., wykr.
Twórcy
autor
  • TECNALIA, Basque Research and Technology Alliance (BRTA), Kurutz Gain Industrialdea 10, 20850 Mendaro, Spain
  • TECNALIA, Basque Research and Technology Alliance (BRTA), Kurutz Gain Industrialdea 10, 20850 Mendaro, Spain
autor
  • Edertek S. Coop, Isasi Kalea 6, 20500 Arrasate-Mondragón, Spain
autor
  • TECNALIA, Basque Research and Technology Alliance (BRTA), Kurutz Gain Industrialdea 10, 20850 Mendaro, Spain
autor
  • TECNALIA, Basque Research and Technology Alliance (BRTA), Kurutz Gain Industrialdea 10, 20850 Mendaro, Spain
autor
  • TECNALIA, Basque Research and Technology Alliance (BRTA), Kurutz Gain Industrialdea 10, 20850 Mendaro, Spain
Bibliografia
  • [1] Robles-Hernandez, F.C., Ramirez, J.M.H. & Mackay, R. (2017). Al-Si Alloys: Applications in the Automotive and Aerospace Industries. Springer.
  • [2] ASM International. (2018). ASM Handbook Volume 15: Casting. ASM International.
  • [3] Kaufman, J.G. & Rooy, E.L. (2014). Aluminum alloy castings: properties, processes, and applications. ASM International.
  • [4] Lumley, R. (2010). Fundamentals of aluminium metallurgy: production, processing and applications. Elsevier Science.
  • [5] Smith, D.D. & Britt, K.O. (2016). Theory and practical application of ultrasonic degassing at JW aluminum. Light Metals 2016. Springer. 803-808.
  • [6] Alba-Baena, N., Pabel, T., Villa-Sierra, N. & Eskin, D.G. (2013). Effect of ultrasonic melt treatment on degassing and structure of aluminium alloys. Materials Science Forum. 765, 271-275. DOI: 10.4028/www.scientific.net/MSF.765.271.
  • [7] Eskin, G.I. (1995). Cavitation mechanism of ultrasonic melt degassing. Ultrasonics Sonochemistry. 2(2), S137-S141. DOI: 10.1016/1350-4177(95)00020-7.
  • [8] Puga, H., Barbosa, J., Azevedo, T., Ribeiro, S. & Alves, J. (2016). Low pressure sand casting of ultrasonically degassed AlSi7Mg0. 3 alloy: Modelling and experimental validation of mould filling. Materials & Design. 94, 384-391. DOI: 10.1016/j.matdes.2016.01.059.
  • [9] Rundquist, V., Manchiraju, K. & Qingyou, H. (2015). Ultrasonic Degasing and Processing of Aluminum Part II. Light Metals 2015. Springer. 943-948.
  • [10] Puga, H., Barbosa, J., Seabra, E., Ribeiro, S. & Prokic, M. (2009). The influence of processing parameters on the ultrasonic degassing of molten AlSi9Cu3 aluminium alloy. Materials Letters. 63(9-10), 806-808. DOI: 10.1016/j.matlet.2009.01.009.
  • [11] Haghayeghi, R., Heydari, A. & Kapranos, P. (2015). The effect of ultrasonic vibrations prior to high pressure die-casting of AA7075. Materials Letters. 153, 175-178. DOI: 10.1016/j.matlet.2015.04.034.
  • [12] Pabel, T., Petkov, T., da Silva, M., Ruzsinszki, R., Planta, X., Tort, J. & Eskin, D. (2015). The effect of ultrasonic degassing on the quality and properties of components produced by low and high pressure die casting. International Foundry Research. 03, 28-33.
  • [13] Meek, T.T., Han, Q. & Xu, H. (2006). Degassing of aluminum alloys using ultrasonic vibration. United States: Department of Energy. Office of Energy Efficiency and Renewable Energy.
  • [14] Eskin, D.G. (2017). Overview of ultrasonic degassing development. Light Metals 2017. Springer. 1437-1443.
  • [15] DJurdjevic, M.B., Odanovic, Z. & Pavlovic-Krstic, J. (2010). Melt quality control at aluminum casting plants. Metallurgical and Materials Engineering. 16(1), 63-76.
  • [16] Uludağ, M., Çetin, R., Dişpinar, D. et al. (2018). On the Interpretation of Melt Quality Assessment of A356 Aluminum Alloy by the Reduced Pressure Test: The Bifilm Index and Its Physical Meaning. International Journal of Metalcasting. 12, 853-860. DOI: 10.1007/s40962-018-0217-4.
  • [17] Riestra, M., Bjurenstedt, A., Bogdanoff, T. et al. (2017). Complexities in the Assessment of Melt Quality. International Journal of Metalcasting. 12, 441-448. DOI: 10.1007/s40962-017-0179-y.
  • [18] Dispinar, D. & Campbell, J. (2004). Critical assessment of reduced pressure test. Part 1: Porosity phenomena. International Journal of Cast Metals Research. 17(5), 280-286. DOI: 10.1179/136404604225020696.
  • [19] Samuel, A.M. & Samuel, F.H. (1993). The reduced pressure test as a measuring. Metallurgical Transactions A. 24(8), 1857-1868. DOI: 10.1007/BF02657860.
  • [20] Totten, G.E. & MacKenzie, D.S. (2003). Handbook of Aluminum: Vol. 1: Physical Metallurgy and Processes. CRC press.
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-bfb5061b-0c0b-405c-bcf7-bd073d4ebca8
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