TY - JOUR N2 - An influence of a decreased Cr content on the microstructure of the highly alloyed Cr-Ni cast steel, duplex type, melted under laboratory conditions, was characterized in the paper. The microstructure investigations were performed in the initial state and after the heat treatment (solution annealing) at 1060°C as well as the phase transformation kinetics at continuous cooling was measured. The wear resistance of the investigated cast steel was tested and compared with the 24%Cr-5%Ni-2.5%Mo cast steel. The Cr content decrease, in ferritic-austenitic cast steels (duplex), from 24-26%Cr to 18% leads to the changes of the castings microstructure and eliminating of a brittle σ phase. In dependence of the casting cooling rate, apart from ferrite and austenite, also fine martensite precipitates occur in the casting structure. It was shown that the investigated cast steel is characterised by a slightly lower wear resistance than the typical cast steel duplex grades. L1 - http://www.journals.pan.pl/Content/87089/PDF/13_paper.pdf L2 - http://www.journals.pan.pl/Content/87089 PY - 2012 IS - No 4 DO - 10.2478/v10266-012-0111-0 KW - Highly alloyed Cr-Ni cast steel KW - Microstructure KW - Equivalent Cr and Ni KW - CCT diagrams KW - abrasive wear A1 - Kalandyk, B. PB - The Katowice Branch of the Polish Academy of Sciences DA - 2012 T1 - Microstructure and Abrasive Wear Resistance of 18Cr-4Ni-2.5Mo Cast Steel UR - http://www.journals.pan.pl/dlibra/publication/edition/87089 T2 - Archives of Foundry Engineering ER -