The　work　aims　to　prepare　in　situ　carbide　enhanced　BCC　structure　high-entropy　alloy　cladding　layers,　and　study　the　effect　of　design　content　of　carbide　on　their　microstructure　and　mechanical　properties.　Therefore,　in　situ　VC　enhanced　Al1.5CoCrFeNi(VC)x　(x=0,　0.1,　0.2,　0.3,　mole　ratio)　high-entropy　alloy　were　manufactured　on　the　Q235　steel　by　plasma　cladding.　The　effect　of　VC　design　content　on　their　phases,　microstructure,　and　mechanical　properties　were　analyzed.　Al,　Co,　Cr,　Fe,　Ni,　vanadium-iron　alloy　(50%　V,　50%　Fe)　and　high　carbon　ferrochrome　(7%　C,　30%　Fe,　63%　Cr)　powders　were　mixed　according　to　the　atomic　ratio　of　Al1.5CoCrFeNi(VC)x　(x=0,　0.1,　0.2,　0.3,　mole　ratio).　The　particle　size　range　of　the　above　powders　was　100-200　mesh.　Q235　steel　was　selected　as　substrate,　whose　surface　was　polished　and　rinsed　with　acetone　before　plasma　cladding.　A　plasma　spray　welding　machine　(PT-400E4-ST)　was　used　to　produce　cladding　layers.　The　phases,　morphologies,　and　element　compositions　of　cladding　layers　were　analyzed　by　X-ray　diffractometer　(XRD,　XRD-7000),　scanning　electron　microscope　(SEM,　S-3400),　energy　dispersive　spectrometer　(EDS)　and　transmission　electron　microscope　(TEM,　JEM2100),　respectively.　The　microhardness　of　cladding　layers　were　measured　by　microhardness　tester　(HXD-1000).　The　wear　properties　of　cladding　layers　were　evaluated　by　abrasive　wear　testing　machine　(MLS-225).　The　results　indicated　that　when　x=0,　the　cladding　layer　was　BCC　solid-solution　and　its　microstructure　was　typical　dendrite　structure.　The　dendrite　was　BCC　solid-solution　rich　in　Al　and　Ni,　and　the　interdendrite　was　BCC　solid-solution　rich　in　Cr　and　Fe.　After　adding　V　and　C　(x=0.1,　0.2,　0.3),　the　diffraction　peaks　of　cladding　layers　were　composed　of　BCC　solid-solution,　VC　and　a　few　σ　phases.　The　shape　of　VC　was　polygonal　granular,　long　striplight　and　cross-dendrite.　The　VC　mostly　segregated　at　interdendrite,　but　only　a　few　inside　the　dendrite.　And　with　the　increase　of　V　and　C　content,　the　precipitation　amount　of　VC　also　increased.　TEM　results　indicated　that　the　interface　between　the　in　situ　VC　and　the　matrix　was　clean　without　other　reacting　products.　With　the　increase　of　VC　design　content　from　x=0　to　x=0.3,　the　hardness　of　cladding　layers　increased　from　529.3HV　to　829.8HV,　and　weight　loss　rate　reduced　from　34.88　mg/min　to　2.45　mg/min.　When　x=0,　the　wear　mechanism　of　the　cladding　layer　was　mainly　microscopic　cutting,　supplemented　by　repeated　plastic　deformation.　After　adding　V　and　C　(x=0.1,　0.3),　the　wear　mechanism　of　cladding　layers　was　mainly　microscopic　cutting.　In　situ　VC　plays　an　obvious　strengthening　role　in　the　high-entropy　alloy.　With　the　increase　of　VC　design　content　from　x=0　to　x=0.3,　the　hardness　and　wear　resistance　of　the　cladding　layers　are　increased.　©　2025　Chongqing　Wujiu　Periodicals　Press.　All　rights　reserved.