Flexural failure behavior of inconel 625 /Ti-6Al-4 V laminated composites prepared by diffusion joining

Abstract

IN625/TC4 laminated composites were fabricated using the diffusion joining method. Subsequently, the microstructure and mechanical properties of these composites were assessed via a three-point bending test, wherein the complete crack extension paths were recorded to evaluate the influence of the laminate structure on fracture properties. Various damage modes, including bridging cracks, crack deflection, delamination, and plastic deformation, were observed and analyzed. The findings demonstrate that the laminate structure of IN625/TC4 composites exhibits exceptional damage tolerance, attributed to the activation of energy absorption mechanisms through multiple fracture modes. The presence of the interface layer significantly impacts the deformation and failure behavior of the material, leading to intricate changes influenced by various factors.