TY - JOUR N2 - Recycling of aluminium returnable material through its reuse is now an essential component of the production of aluminium alloy castings. The main goal is to find a suitable ratio of the primary alloy and the returnable material in the batch, thus determining the right compromise between the price and the quality of the casting. Experimental alloys were evaluated by thermal analysis, combination of structural analytical techniques and selected mechanical properties. The alloys were also subjected to tearing susceptibility testing. The increase in the returnable material amount resulted in changes in the alloy properties at the first increase in volume to 20%. After exceeding the balanced ratio (50:50), there was considerable degradation of the microstructure, failure to achieve the minimum values of some mechanical properties required by the standard, and the alloy showed increased susceptibility to tearing. L1 - http://journals.pan.pl/Content/117782/PDF/AMM-2021-1-02-Matejka.pdf L2 - http://journals.pan.pl/Content/117782 PY - 2021 IS - No 1 EP - 23 DO - 10.24425/amm.2021.134753 KW - Al-Si-Cu cast alloys KW - natural and artificial ageing KW - metallography KW - mechanical properties KW - hot tearing A1 - Matejka, M. A1 - Bolibruchová, D. A1 - Chalupová, M. PB - Institute of Metallurgy and Materials Science of Polish Academy of Sciences PB - Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences VL - vol. 66 DA - 2020.12.22 T1 - Study of the Properties of the AlSi9Cu3 Alloy Depending on the Ratio of Returnable Material in the Batch SP - 15 UR - http://journals.pan.pl/dlibra/publication/edition/117782 T2 - Archives of Metallurgy and Materials ER -