Binderless　cemented　carbides　exhibit　superior　hardness　and　excellent　resistance　to　high　temperature,　abrasion　as　well　as　corrosion　and　shows　a　great　application　prospect　in　optical　component　molds　and　water-jet　nozzles.　Metal　carbides　are　usually　introduced　into　the　binderless　tungsten　carbide　system　to　form　a　solid　solution　and　facilitate　the　full　densification　of　a　green　body.　Understanding　the　intrinsic　sintering　mechanism　behind　such　a　solid　solution　effect　has　broad　technological　implications.　In　this　study,　transmission　Kikuchi　diffraction,　complemented　by　aberration-corrected　electron　microscopy　was　employed　to　investigate　the　structure　and　chemistry　of　all　the　constitutional　phases　and　interfaces.　The　(TixCryWz)C　solid　solution　is　found　to　establish　an　epitaxial　crystallization　habit　on　the　basal　planes　of　a　majority　of　cemented　carbide　grains　as　well　as　the　surfaces　of　partially　dissolved　TiC　particles.　The　prevailing　existence　of　coherent　interfaces　suggests　the　operation　of　a　liquid　phase　sintering　mechanism.　This　is　also　substantiated　by　the　existence　of　anisotropic　interfacial　premelting　films　with　chemistry　resembling　that　of　the　(TixCryWz)C　solid　solution.　The　proposed　liquid　phase　sintering　mechanism　offers　theoretical　guidelines　for　sintering　densified　binderless　systems.　©　2022　Elsevier　Ltd　and　Techna　Group　S.r.l.