This paper studies the surfacing metal of Nb-NiTi-B strengthened flux-cored wire

the crystalline structure and morphology were analyzed by XRD and SEM. The results show that Fe

2

B in the deposited metal can make the deposited metal more stable and has good peeling resistance. Fe

2

B has high hardness

good wear resistance and uniform distribution. It is embedded in the deposited metal as a skeleton

making the alloy have good wear resistance. TiC in the surfacing metal provides condensation nucleus for NbC to form NbC+TiC eutectic tissue

it is beneficial to promote NbC dispersion distribution while improving wear resistance. The NbC + TiC eutectic structure is dispersed in the surfacing metal

and part of the NbC + TiC eutectic structure embedded in the Fe

2

B structure is conducive to the fixation of Fe

2

B structure. By comparing the wear test of NbNi-Ti-B strengthened flux cored wire and 5C-27Cr high carbon and high chromium alloy welding wire

the wear resistance of NbNi-Ti-B strengthened flux cored wire is 2.08 compared with 5C-27Cr high carbon and high chromium alloy welding wire.