The　widespread　adoption　of　Nd-Fe-B　magnets　with　abundant　and　cheap　Ce　substitution　for　Nd　is　significantly　constrained　by　the　inherently　inferior　magnetic　properties　exhibited　by　Ce-Fe-B.　In　this　study,　high-performance　Nd-Ce-Fe-B　sintered　magnets　with　Nd-Fe-B　+　Ce-Fe-B　(N-C-type)　and　Nd-Fe-B　+　(Nd,　Ce)-Fe-B　(N-NC-type)　compositions　are　successfully　developed　through　the　design　of　dual-alloy　components,　which　facilitate　precise　control　over　the　distribution　of　rare-earth　(RE)　elements　in　the　dual-main-phase　grains.　The　N-C-type　exhibits　higher　remanence　(Br)　and　magnetic　energy　product　[(BH)max],　whereas　the　N-NC-type　demonstrates　higher　coercivity　(Hcj).　The　magnetic　properties　of　the　as-sintered　magnet　with　20　wt.%　of　Ce　over　the　total　RE　content　are　optimized　via　Br　of　14.25　kG,　Hcj　of　8.6　kOe,　and　(BH)max　of　48.6　MGOe.　After　annealing,　Hcj　increases　to　greater　than　10　kOe　and　(BH)max　remains　at　47　MGOe.　Through　the　implementation　of　reasonable　composition　design　and　the　optimization　the　preparation　processes　in　these　grains,　the　RE　elements　exhibit　a　clear　stepwise　heterogeneity　of　the　chemical　composition　in　their　core-shell　structure,　whereas　the　shell　structures　of　these　grains　display　a　homogeneity　of　chemical　composition.　The　results　provide　a　reference　for　the　composition　design　and　development　of　high-performance　high-abundance　RE　sintered　magnets　for　enhancing　the　utilization　of　high-abundance　RE　elements　in　permanent　magnetic　materials　and　contributing　to　a　more　balanced　exploitation　of　RE　resources.　©　2024