TY - JOUR N2 - This article discusses the influence of Tungsten Inert Gas (TIG) surfacing of duplex cast steel on its hardness and structure. The samples of 24Cr-5Ni-2.5Mo ferritic-austenitic cast steel were subjected to single-overlay processes with the use of solid wire having the chemical composition similar to that of the duplex cast steel. As a result of the surfacing, the welds were obtained that had no welding imperfections with a smooth transition to the base material. In the test without the heat treatment, directly below the fusion line, we observe a ferrite band with a width of approximately 200 m without visible austenite areas. Some of the samples were then solution treated (1060°C). Both variants, without and after solution heat treatment, were subjected to testing. Significant changes in the microstructure of the joint were observed after the heat treatment process (heat affected zone and weld microstructure changes). In both areas, an increase in the austenite volume fraction after solution heat treatment was observed. Changes in the microhardness of the ferrite in the HAZ area directly below the fusion line were also observed. L1 - http://journals.pan.pl/Content/106772/PDF/AFE%202_2018_03.pdf L2 - http://journals.pan.pl/Content/106772 PY - 2018 IS - No 2 DO - 10.24425/122495 KW - duplex cast steel KW - surfacing KW - TIG method KW - solution heat treatment KW - microstructure A1 - Kalandyk, B. A1 - Kasińska, J. A1 - Skrzypczyk, A. PB - The Katowice Branch of the Polish Academy of Sciences VL - vol.18 DA - 2018 T1 - Surfacing 24Cr-5Ni-2.5Mo Duplex Steel Castings by TIG UR - http://journals.pan.pl/dlibra/publication/edition/106772 T2 - Archives of Foundry Engineering ER -