The functionally graded cemented tungsten carbide (FGCC) is a suitable material choice for cutting tool applications due to balanced hardness and fracture toughness. The presence of cobalt and CaF₂ composition gradient in FGCC may enhance mechanical as well as antifriction properties. Therefore, structural design of self-lubricating FGCC was proposed using Power law composition gradient model and thermal residual stresses (TRSs) as a key parameter. Wherein, S. Suresh and A. Mortensen model was adopted for estimation of TRS, and optimum composition gradient was identified at Power law exponent n = 2. The designed material displayed compressive and tensile TRS at surface and core respectively; subsequently fabricated by spark plasma sintering and characterized via scanning electron microscope (SEM), indentation method. The agreement between experimental and analytical values of TRS demonstrated the effectiveness of intended design model in the composition optimization of self-lubricating FGCC. This work will be helpful in implementation of dry machining for clean and green manufacturing.

功能平衡的硬质碳化钨（FGCC）具有平衡的硬度和断裂韧性，是切削工具应用的合适材料选择。FGCC中钴和CaF ₂成分梯度的存在可能会增强机械性能和减摩性能。因此，以幂律组成梯度模型和热残余应力（TRSs）为关键参数，提出了自润滑FGCC的结构设计。其中，采用S. Suresh和A. Mortensen模型估算TRS，并在幂律指数n下确定了最佳的组分梯度。 = 2.设计的材料分别在表面和芯部显示压缩和拉伸TRS；随后通过火花等离子体烧结制造，并通过扫描电子显微镜（SEM），压痕法进行表征。TRS的实验值与分析值之间的一致性证明了预期设计模型在自润滑FGCC成分优化中的有效性。这项工作将有助于实现清洁和绿色制造的干式加工。