Effect of high-entropy powders on “rim-core” structure and properties of Ti(C,N)-Fe cemented carbide
摘要
Ti(C,N)-Fe cemented carbide, which high-entropy ceramic (HEC) powder partially replaces Ti(C,N) as the hard phase, was fabricated via powder metallurgy. This study investigates the influence of HEC powder on the microstructure and mechanical properties of Ti(C,N)-Fe cemented carbide. Experimental results indicate that with the increasing of HEC content, the morphology of hard-phase particles transitions from spherical to polygonal. Additionally, the rim phase and the binder phase in the Ti(C,N)-based carbide exhibit a semi-coherent relationship, suggesting a strong interfacial bonding. Notably, the optimal bonding strength between the hard phase and binder phase is achieved at 5 wt% HEC addition.