Application of Natural and Artificial Ageing on Multiply Remelted AlSi9Cu3 Alloy

• Autorzy: Matejka M. , Bolibruchova D.

Identyfikatory

DOI

10.24425/afe.2019.127117

• Języki publikacji: EN

Abstrakty

EN

This article focuses on the study of the influence of remelting and subsequent natural and artificial ageing on the structure of recycled AlSi9Cu3 alloy with increased iron content. The assessed changes in eutectic silicon and iron-based intermetallic phases were carried out using optical and scanning electron microscopy. The degradation of the eutectic silicon morphology due to remelting occurred only at the highest numbers of remelting. The effect of remelting the investigated alloy, which is accompanied by a gradual increase in wt. % Fe, began to manifest significantly through a change in the length of the ferric phases after the fourth remelting. As expected, the artificial ageing process has proven to be more effective than natural ageing. It has led to a change in the eutectic silicon morphology and has been beneficial in reducing the lengths of adverse ferric phases. The use of alloys with higher numbers of remelting, or with greater “contamination”, for the manufacture of shape-challenging castings is possible when using a suitable method of eliminating the negative factors of the remelting process. The results of our investigation show a suitable method of the above elimination the application of heat treatment T5 – via artificial ageing.

Słowa kluczowe

EN

remelting; Fe phases; artificial ageing; natural ageing; eutectic silicon

PL

przetapianie; fazy Fe; starzenie sztuczne; naturalne starzenie; krzem eutektyczny

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2019
• Tom: iss. 2
• Strony: 60--66
• Opis fizyczny: Bibliogr. 10 poz., fot., rys., tab.

Twórcy

autor

Matejka M.

• University of Zilina, Faculty of Mechanical Engineering, Department of Technological Engineering, Zilina, Slovak Republic

autor

Bolibruchova D.

• University of Zilina, Faculty of Mechanical Engineering, Department of Technological Engineering, Zilina, Slovak Republic

Bibliografia

• [1] Taylor, J.A. (2012). Iron-containing intermetallic phases in Al-Si based casting alloys. Procedia Materials Science. 1, 19-33.
• [2] Cao, X. & Campbell, J. (2006). Morphology of Al5FeSi Phase in Al-Si Cast Alloys. Materials Transactions. 47(5), 1303-1312.
• [3] Tillová, E. & Panušková, M. (2008). Effect of solution treatment on intermetallic phases morphology in AlSi9Cu3 cast alloy. Metabk. 47(3), 207-210.
• [4] Dinnis, C. (2005). As-cast morphology of iron-intermetallics in Al-Si foundry alloys. Scripta Materialia. 53(8), 955-958.
• [5] Podprocká, R. & Bolibruchová, D. (2017). Iron intermetallic phases in the alloy Based on Al-Si-Mg by applying manganese. Archives of Foundry Engineering. 17(3), 217-221.
• [6] Stefano, C., Giulio, T., Alberto, F. & Franco, B. (2015). Influence of ageing heat treatment on microstructure and mechanical properties of a secondary rheocast AlSi9Cu3(Fe) alloy. Materials Science Forum. 212-218.
• [7] Matejka, M. & Bolibruchová, D. (2018). Effect of remelting on microstructure of the AlSi9Cu3 alloy with higher iron content. Archives of Foundry Engineering. 18(4), 25-30.
• [8] Ferraro, S., Fabrizi, A. & Timelli, G. (2015). Evolution of sludge particles in secondary die-cast aluminium alloys as function of Fe, Mn and Cr contents. Materials Chemistry and Physics. 153, 168-179.
• [9] Łągiewka, M., Konopka, Z., Zyska, A. & Nadolski, M. (2010) The influence of modification on the flow and the solidification of AlSi10Mg alloy. Archives of Materials Science and Engineering. 10(4), 119-122.
• [10] Czekaj, E., Zych, J., Kwak, Z. & Garbacz-Klempka, A. (2016). Quality Index of the AlSi7Mg0.3 Aluminium Casting Alloy Depending on the Heat Treatment Parameters. Archives of Foundry Engineering. 16(3). 25-28.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).