Cavitation erosion damage of self-fluxing NiCrSiB hardfacings deposited by oxy-acetylene powder welding

Abstract This paper comparatively investigates the cavitation erosion damage of two self-fluxing NiCrSiB hardfacings deposited via oxy-acetylene powder welding method. Examinations were conducted according to procedure given by ASTM G32 standard. In order research (CE), vibratory apparatus was employed. The damaged surfaces inspected using a scanning electron microscope, optical microscope and surface profilometer. hardness A-NiCrSiB hardfacing equals 908HV while that C-NiCrSiB amounts 399HV. showed CE resistance is higher than A-NiCrSiB. results demonstrate in case multiphase materials, like hardfacings, cannot be key factor for estimation whereas it strongly subjected material microstructure. qualitatively recognise at exposure time, following factors should respected: physical mechanical properties, microstructure also loss eroded morphology, both stated specific testing time. general idea welds presented.