Akademik Veri Yönetim Sistemi
International Journal of Precision Engineering and Manufacturing, cilt.26, sa.11, ss.3103-3121, 2025 (SCI-Expanded, Scopus)
This study introduces a novel hybrid manufacturing technique that combines Selective Laser Melting (SLM) with powder metallurgy to enhance the mechanical performance of steel lattice structures. The method involves fabricating shell-lattice components using SLM with 316 L, MS1, and 316 L + 2% Cu powders, followed by targeted sintering and heat treatment to refine the internal porous zones. Three distinct lattice geometries—closed hexagon, re-entrant, and Schwarz-P—were integrated into the design to examine structural behavior under compression. Parts were produced and tested using microhardness analysis, scanning electron microscopy, and compression testing. The sintering stage promoted densification and metallurgical bonding within the lattice-filled cavities, resulting in improved mechanical strength and multifunctionality. Results revealed yield strength improvements of up to 250% and toughness increases of 25%, particularly in re-entrant lattices. The technique also enabled the formation of multifunctional zones within a single part, including sintered porous regions, load-bearing lattice walls, and a dense outer shell. These findings demonstrate the potential of the hybrid method to produce lightweight, impact-resistant steel components more efficiently, with strong implications for aerospace, automotive, and defense applications.