In　this　study,　a　wear-resistant　coating　of　high　boron　content　Al1.5CoCr2Fe1.5NiSi0.5B2　high-entropy　alloy　(HEA)　was　prepared　on　X65　pipeline　steel　by　laser　cladding.　The　coating　underwent　microhardness　testing,　wear　performance　testing,　and　analyses　including　scanning　electron　microscope　(SEM),　transmission　electron　microscope　(TEM),　and　X-ray　diffraction　(XRD).　The　results　revealed　a　dual-phase　structure　of　body-centered　cube　(BCC)　and　face-entered　cube　(FCC)　in　the　coating,　with　the　presence　of　Fe1.1Cr0.9B0.9　phase　distributed　within　the　BCC.　Utilizing　high-resolution　transmission　electron　microscopy　(HRTEM)　characterization,　irregular　atomic　arrangement　regions　within　the　BCC　structure　were　observed.　Through　the　calculation　of　the　α2　and　ε　parameters　of　the　coating,　the　degree　of　lattice　distortion　in　the　BCC　and　FCC　phases　was　quantitatively　described.　The　results　suggested　that　the　addition　of　a　substantial　amount　of　boron　could　strengthen　the　lattice　distortion　effect,　leading　to　improved　hardness　and　wear　resistance　of　the　coating.　The　average　microhardness　of　the　coating　was　912　HV,　about　5　times　higher　than　X65　substrate,　improved　by　more　than　10　%　compared　with　other　AlCoCrFeNi-based　high-entropy　alloys　and　B-containing　high-entropy　alloys.　The　wear　rate　was　4.78　×　10−6　mm/N·m,　wear　performance　is　nearly　10　times　higher　than　other　AlCoCrFeNi　HEA　without　boron,　2　times　higher　than　HEA　with　born.　The　wear　mechanism　of　the　coating　was　identified　as　abrasive　and　oxidative　wear.　©　2024　Elsevier　B.V.