TY - JOUR N2 - In this study, low-carbon cast steel was reinforced with TiC by SHS-B method, also known as combustion synthesis during casting method. The composite zone was then subjected to surface remelting by Gas Tungsten Arc Welding (GTAW) method. The remelting operation was realized manually, at 150 A current magnitude. Microstructure, phase composition and hardness of remelted zone were investigated. XRD results reveal that the phases of the composite zone in initial state consist of TiC and Feα. Surface remelting resulted in formation of thick layers containing TiC carbides, Feα and Feγ. Microstructural examination has shown strong refinement of titanium carbides in remelted zone and complete dissolution of primary titanium carbides synthetized during casting. The average diameter of carbides was below 2 μm. The structural changes are induced by fast cooling which affects crystallization rate. The hardness (HV30) of the remelted layer was in the range between 250 HV and 425 HV, and was lower than hardness in initial state. L1 - http://journals.pan.pl/Content/104599/PDF/afe-2017-0148.pdf L2 - http://journals.pan.pl/Content/104599 PY - 2017 IS - No 4 DO - 10.1515/afe-2017-0148 KW - Composite steel casting KW - TiC-reinforced cast steel KW - GTAW surface remelting A1 - Sobula, S. A1 - Kwiecień, A. A1 - Olejnik, E. A1 - Pałka, P. PB - The Katowice Branch of the Polish Academy of Sciences VL - vol. 17 DA - 2017 T1 - Microstructure Characteristic of TiCReinforced Cast Steel after GTAW Remelting UR - http://journals.pan.pl/dlibra/publication/edition/104599 T2 - Archives of Foundry Engineering ER -