  In this paper, to improve wear resistance of components such as screws under
severe friction-wear, Fe-Cr-C-Mo-V-Ti-N hardfacing coatings were further
developed. The hardfacing coatings were acquired by shielded manual arc welding
(SMAW) method. The ferroalloys added into the coating flux of the hardfaced
electrode were jointly nitrided. The microstructure of the coatings was carried
out using X-ray diffraction(XRD), optical microscope(OM), field emission
scanning electron microscope (FESEM) and energy dispersive Xray spectrometry
(EDS). In addition, FactSage 7.0 software was employed to calculate the
equilibrium phase diagram of the hardfacings. The wear resistance was performed
on a pin-on-disc machine. The Fe-Cr-C- Mo-V-Ti-N hardfacings exhibited higher
wear resistance than cladding layer without nitrides.
