| Abstract Scope |
Wire Arc Additive Manufacturing (WAAM) was utilized to fabricate a dissimilar steel composite—comprising three layers of LA-100 high-strength low-alloy (HSLA) steel and one layer of 316L stainless steel to investigate the system's combined strength–ductility behavior. A defect-free wall structure (approximately 206 mm × 15 mm × 150 mm) was successfully deposited with sound metallurgical bonding. To assess anisotropic mechanical properties, including yield strength, ultimate tensile strength, and elongation, tensile specimens were tested in both horizontal and vertical orientations. Furthermore, microstructural characterization and hardness mapping were conducted to analyze phase evolution, grain morphology, and interfacial diffusion. This study provides foundational insights into the mechanical performance and interfacial characteristics of layered, multi-material WAAM structures. |