In this work, incompatible properties of WC-Co cermet and AISI 304 steel were combined in the same component using rotary friction welding (RFW) process. The dissimilar joints were performed using a ductile NiCr interlayer with the change in the WC-Co cermet positioning i.e., fixed rotary side and feeding side. Similar microstructure across the weld joints was obtained of the different welding configurations that produced similar behavior in hardness and elastic modulus. A diffusion zone was formed at the weld interface as a result of the mutual inter-diffusion of both cermet (W and Co) and steel elements (Fe, Cr and Ni) that enhanced with the insertion of the interlayer when the cermet was fixed in rotary side. The introduction of the NiCr interlayer was beneficial to relax the residual stresses and improving the shear strength of the WC-Co cermet/AISI 304 L steel joints, which is promising technology for drilling tools industries.

在这项工作中，使用旋转摩擦焊接 (RFW) 工艺将 WC-Co 金属陶瓷和 AISI 304 钢的不兼容特性结合在同一部件中。异种接头使用延展性 NiCr 夹层进行，改变 WC-Co 金属陶瓷定位，即固定旋转侧和进给侧。不同的焊接配置在焊接接头上获得了类似的微观结构，这些配置在硬度和弹性模量方面产生了类似的行为。由于金属陶瓷（W 和 Co）和钢元素（Fe、Cr 和 Ni）的相互扩散，在焊缝界面处形成扩散区，当金属陶瓷固定在中间层时，扩散区随着夹层的插入而增强。旋转侧。