Fig. 1. (a) Morphology and (b) particle size distribution of the invar-alloy powders

Fig. 2. (a) Morphology and (b) size of tensile samples

Fig. 3. (a) CAD model, (b) simulation model, and (c) final samples of lattice structure

Fig. 4. Relationship between relative density and laser energy density

Fig. 5. Cross section of samples built at different laser energy densities. (a) 46 J/mm³; (b) 78 J/mm³; (c) 115 J/mm³

Fig. 6. Vertical section of the sample. (a) EBSD image; (b) distribution of different phases

Fig. 7. SEM photographs of the top and side views of the lattice structure

Fig. 8. Dimensional deflections of the lattice structure struts relative to the designed strut diameter under different laser scanning speeds

Fig. 9. Microscopic images of the strut sections under different laser scanning speeds. (a) 600 mm/s; (b) 800 mm/s; (c) 1000 mm/s; (d) 1200 mm/s

Fig. 10. Compression simulation and physical image of lattice structures

Fig. 11. Experimental and simulated compression curves of lattice structures