TY - JOUR N2 - The results presented in this paper are a continuation of the previously published studies. The results of hest treatment of ductile iron with content 3,66%Si and 3,80% Si were produced. The experimental castings were subjected to austempering process for time 30, 60 and 90 minutes at temperature 300o C. The mechanical properties of heat treated specimens were studied using tensile testing and hardness measurement, while microstructures were evaluated with conventional metallographic observations. It was again stated that austempering of high silicone ferritic matrix ductile iron allowed producing ADI-type cast iron with mechanical properties comparable with standard ADI. L1 - http://journals.pan.pl/Content/88056/PDF/18_paper.pdf L2 - http://journals.pan.pl/Content/88056 PY - 2014 IS - No 2 DO - 10.2478/afe-2014-0043 KW - mechanical properties KW - Austempered ductile iron KW - Silicone content KW - Matrix structure KW - Ultimate tensile strength A1 - Krzyńska, A. A1 - Kochański, A. PB - The Katowice Branch of the Polish Academy of Sciences DA - 2014 T1 - Properties and Structure of High-Silicone Austempered Ductile Iron UR - http://journals.pan.pl/dlibra/publication/edition/88056 T2 - Archives of Foundry Engineering ER -