TY - JOUR N2 - The paper presents the results concerning impact of modification (volume and surface techniques), pouring temperature and mould temperature on stereological parameters of macrostructure in IN713C castings made using post-production scrap. The ability to adjust the grain size is one of the main issues in the manufacturing of different nickel superalloy castings used in aircraft engines. By increasing the grain size one can increase the mechanical properties, like diffusion creep resistance, in higher temperatures. The fine grained castings. on the other hand, have higher mechanical properties in lower temperatures and higher resistance to thermal fatigue. The test moulds used in this study, supplied by Pratt and Whitney Rzeszow, are ordinarily used to cast the samples for tensile stress testing. Volume modification was carried out using the patented filter containing cobalt aluminate. The macrostructure was described using the number of grains per mm2 , mean grain surface area and shape index. Obtained results show strong relationship between the modification technique, pouring temperature and grain size. There was no significant impact of mould temperature on macrostructure. L1 - http://www.journals.pan.pl/Content/101884/PDF/afe-2016-0040.pdf L2 - http://www.journals.pan.pl/Content/101884 PY - 2016 IS - No 3 DO - 10.1515/afe-2016-0040 KW - Innovative casting materials and technologies KW - Nickel alloy IN-713C KW - Surface and volume modification KW - Cobalt aluminate KW - Macrostructure A1 - Gradoń, P. A1 - Binczyk, F. A1 - Mańka, M. A1 - Cwajna, J. PB - The Katowice Branch of the Polish Academy of Sciences DA - 2016 T1 - Influence of Modification and Casting Technology on Structure of IN-713C Superalloy Castings UR - http://www.journals.pan.pl/dlibra/publication/edition/101884 T2 - Archives of Foundry Engineering ER -