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In recent years, significant efforts have been devoted towards the development of high-performance cermets with superior hardness and fracture toughness for engineering applications. In this study, a (Ti 1-x TM x )C solid solution of a Ni cermet was prepared based on a combination of ab initio calculation and experimental results. The structural stability, mechanical properties, and microstructure of the cermet were investigated. A screening process was conducted using ab initio calculations to determine the optimal composition of (Ti 1-x TM x )C (TM = V, Mo, and W) (x = 0–0.3125). The enhancement of the mechanical properties was analysed by calculating the electronic properties of the (Ti 1-x TM x )C solid solutions. Additionally, we evaluated the powder morphology, microstructure, and mechanical properties of (Ti 1-x TM x )C–20Ni by using experimental methods. The (Ti 0.7 W 0.3 )C–20Ni cermet exhibited enhanced hardness and fracture toughness in relation to conventional TiC–Ni cermets. Computational and experimental results indicated that the addition of secondary carbides improved the overall material properties.

materials technology

Effects of secondary carbide addition on the mechanical properties of (Ti 1-x TM x )C-based 20Ni cermets (TM = V, Mo, and W): a study combining ab initio calculation and experimental results