Wear resistance of steel obtained by surfacing with flux-cored wire 15N8G6M3FTB

The wear resistance of steel 15N8G6M3 was studied during its alloying by vanadium, titanium and niobium as a result of surfacing with flux-cored wire. It was established that the average value of the relative mass wear of such a metal is 0.000374 g/m, and the average value of the linear wear is 0.0007876 mm/m. The coefficient of friction after running in decreases from 0.257 to 0.209, and its average value is 0.220. The microhardness of the matrix of such a metal as a result of aging is in the range of 602-620 HV, the microhardness of the eutectic is 648-783 HV and the hardening phases are in the range of 700-1029 HV. It was shown that the steel hardening mechanism of such a system is determined by the compounds of carbides for the most part V0.89Ti0.11C0.5, NbC, and a small amount of Ti6C3.75, Mo2C, intermetallic compounds for the most part Fe2Ti, Ni0.75Mo0.125V0.125, and a small amount of MoNb, Ti0.942Ni0.106, Fe0.08Ti0.092V0.828 and Nb4N2.62 nitride formed as a result of aging. The established complex of dispersed phases released after aging determines the wear resistance of such steel. The flux-cored wire based on 15N8G6M3FTB steel can be used for surfacing parts operating under moderate wear conditions.