Fe-C-Mo-V hardfacing alloys wear samples are prepared by GMAW welding technology. Dry sand abrasive wear tests are carried out based on the rolling three-body abrasive environment

and scanning electron microscope

energy spectrum analysis

Vickers hardness tester and other microscopic analysis and performance testing methods have been used to detect and characterize the wear loss and wear scar morphology of the FeC-Mo-V hardfacing alloy deposited metal. The changes in wear behavior of the deposited metal under different normal load conditions are studied. The results show that with the increase of normal load

wear loss gradually increases

but the increase gradually slows. The wear mechanism of the hardfacing alloy is the plowing effect on the austenite matrix by abrasive grains

and the VC hard phase

lamellar eutectic structure to flake.After the wear

the surface hardness increases gradually with the increase of normal load

and the subsurface of the wear mark produces significant work hardening

and the austenite matrix transforms into martensite structure

which enhances the hardness of the material and makes the deposited metal exhibit good wear resistance under high load.