TY - JOUR N2 - The effect of cobalt aluminate inoculant addition and melt-pouring temperature on the structure and mechanical properties of Ni-based superalloy was studied. The first major move to control the quality of investment cast blades and vanes was the control of grain size. Cobalt aluminate (CoAl2O4) is the most frequently utilized inoculant in the lost-wax casting process of Ni-based superalloys. The inoculant in the prime coat of moulds and pouring temperature play a significant role in grain size control. The finest surface grains were obtained when the internal surface of shell mould was coated with cobalt aluminate and subsequently pouring was at 1480°C. The influence of selected casting parameters and inoculant addition on mechanical properties was investigated on the basis of tensile, creep and hardness testing. The effect of grain refinement on mechanical properties were consistent with established theories. Tests conducted at ambient temperature indicated a beneficial effect of grain refinement both on tensile strength and hardness. In contrast at elevated temperature during creep, the reverse trend was observed. L1 - http://www.czasopisma.pan.pl/Content/108048/PDF/AMM-2018-3-68-Rakoczy.pdf L2 - http://www.czasopisma.pan.pl/Content/108048 PY - 2018 IS - No 3 EP - 1545 DO - 10.24425/123845 KW - pouring KW - investment casting KW - lost wax KW - superalloy KW - creep A1 - Rakoczy, Ł. A1 - Grudzień, M. A1 - Cygan, R. A1 - Zielińska-Lipiec, A. 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. 63 DA - 2018.10.10 T1 - Effect of Cobalt Aluminate Content and Pouring Temperature on Macrostructure, Tensile Strength and Creep Rupture of Inconel 713C Castings SP - 1537 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/108048 T2 - Archives of Metallurgy and Materials ER -