Fig. 1. Morphology of 316L stainless steel powder for laser selective melting of lattice structures

Fig. 2. Simple cubic lattice structures with different characteristic dimensions formed by laser selective melting. (a) Face thickness is 0.1 mm; (b) face thickness is 0.3 mm

Fig. 3. Four different lattice unit cell structures. (a) 1×1×1; (b) 2×2×2; (c) 4×4×4; (d) 8×8×8

Fig. 4. Filling schematic diagrams with different numbers of lattice structures. (a) 1×1×1; (b) 2×2×2; (c) 4×4×4; (d) 8×8×8

Fig. 5. Comparison of heat exchange structure. (a) Traditional plate-fin heat exchange structure; (b) lattice heat exchange structure

Fig. 6. Variation of heat exchange efficiency with lattice configuration and density

Fig. 7. Lattice unit cell structure with high heat exchange efficiency

Fig. 8. Lattice structure models with different densities. (a) 8 mm×8 mm×8 mm; (b) 5 mm×5 mm×5 mm; (c) 4 mm×4 mm×4 mm

Fig. 9. 316L stainless steel lattice structures formed by laser selective melting. (a) 8 mm×8 mm×8 mm; (b) 5 mm×5 mm×5 mm; (c) 4 mm×4 mm×4 mm

Fig. 10. CT 3D images of 316L stainless steel lattice structures formed by laser selective melting. (a) 8 mm×8 mm×8 mm; (b) 5 mm×5 mm×5 mm; (c) 4 mm×4 mm×4 mm