Effect of Remelting on Microstructure of the AlSi9Cu3 Alloy with Higher Iron Content

• Autorzy: Matejka M. , Bolibruchova D.

Identyfikatory

DOI

10.24425/123627

• Języki publikacji: EN

Abstrakty

EN

Secondary or multiple remelted alloys are common materials used in foundries. For secondary (recycled) Al-Si-Cu alloys, the major problem is the increased iron presence. Iron is the most common impurity and with presence of other elements in alloy creates the intermetallic compounds, which may negatively affect the structure. The paper deals with effect of multiple remelting on the microstructure of the AlS9iCu3 alloy with increased iron content to about 1.4 wt. %. The evaluation of the microstructure is focused on the morphology of iron-base intermetallic phases in caste state, after the heat treatment (T5) and after natural aging. The occurrence of the sludge phases was also observed. From the obtained results can be concluded that the multiple remelting leads to change of chemical composition, changes in the final microstructure and also increases sludge phases formation. The use of heat treatment T5 led to a positive change of microstructure, while the effect of natural aging is beneficial only to the 3rd remelting.

Słowa kluczowe

EN

metallography; heat treatment; Al-Si-Cu alloy; remelting effect

PL

metalografia; obróbka cieplna; stop Al-Si-Cu; efekt przetapiania

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 18, iss. 4
• Strony: 25--30
• Opis fizyczny: Bibliogr. 8 poz., rys., tab., wykr.

Twórcy

autor

Matejka M.

• Department of Technological Engineering, University of Žilina, Univerzitná 1, 010 26 Žilina, Slovakia

autor

Bolibruchova D.

• Department of Technological Engineering, University of Žilina, Univerzitná 1, 010 26 Žilina, Slovakia

Bibliografia

• [1] Bolibruchová, D., Macko, J. & Brůna, M. (2014). Elimination of negative effect of Fe in secondary alloys AlSi6Cu4 (EN AC 45 000, A 319) by nickel. Archives of Metallurgy and Materials. 59(2), 717-721. DOI: 10.2478/amm-2014-0118.
• [2] Krivoš, E., Pastirčák, R. & Madaj, (2014). Effect of technological parameters on the quality and dimensional accuracy of castings manufactured by patternless process technology. Archives of Metallurgy and Materials. 59(3), 1069-1072. DOI: 10.2478/amm-2014-0182.
• [3] Taylor, J.A. (2012). Iron-containing intermetallic phases in Al-Si based casting alloys. Procedia Materials Science. 1, 19-33. DOI: 10.1016/j.mspro.2012.06.004.
• [4] Cao, X. & Campbell, J. (2006). Morphology of Al5FeSi Phase in Al-Si Cast Alloys. Materials Transactions. 47(5), 1303-1312. DOI: 10.2320/matertrans.47.1303.
• [5] Elsharkawi, E.A., et al. (2010). Effects of Mg, Fe, Be additions and solutions heat treatment on the π-AlMgFeSi iron intermetallic phase in Al-7Si-Mg alloys. Journal of Materials Science. 45, 1528-1539. DOI: 10.1007/s10853-009-4118-z.
• [6] Shabestari, S.G. et al. (2002). Effect of Mn and Sr on intermetallics in Fe-rich eutectic Al-Si alloy. International Journal of Cast Metals Research. 15, 17-24. DOI: 10.1080/13640461.2002.11819459.
• [7] Zhang, Z., et. al. (2013). Effect of the Mn/Fe ratio and cooling rate on the modification of Fe intermetallic compounds in cast A356 based alloy with different Fe contents. Materials Transactions. 54 (8), 1484-1490. DOI: 10.2320/matertrans.F-M2013808.
• [8] Ferraro, S., Bjurenstedt, A. & Seifrddine, S. (2015). On the formation of Sludge intermetallic particles in secondary aluminium alloys. Metallurgical and Materials Transactions A. 46(8), 3713-3722. DOI: 10.1007/s11661-015-2942-0.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).