Fig. 1. SEM images of each powder. (a)(d) Inconel 718 powder; (b)(e) 0.5%TiC/Inconel 718 mixed powder; (c)(f) 1%TiC/Inconel

Fig. 2. Tensile samples formed by laser powder bed fusion (LPBF) and their size. (a) Schematic and photo of tensile samples; (b) size of tensile sample

Fig. 3. Cubic samples photo and surface roughness of Inconel 718 superalloy and its composites. (a) Cubic samples; (b) surface roughness

Fig. 4. Pores in each sample. (a) Inconel 718 superalloy; (b) 0.5%TiC/Inconel 718 composite; (c) 1%TiC/Inconel 718 composite

Fig. 5. CT results and pore diameter statistical distribution of different samples. (a)(d) Inconel 718 superalloy; (b)(e) 0.5%TiC/Inconel

Fig. 6. OM images of samples fabricated by LPBF. (a) Inconel 718 superalloy; (b) 0.5%TiC/Inconel 718 composite; (c) 1%TiC/Inconel 718 composite

Fig. 7. Microstructures of Inconel 718 superalloy fabricated by LPBF. (a) Microstructure at low magnification; (b) microstructure at high

Fig. 8. Microstructures of 0.5%/Inconel 718 composite. (a) 500×; (b) 1000×; (c) 10000×

Fig. 9. Tensile properties of Inconel 718 alloy and composites samples in different states. (a) As-deposited samples; (b) heat-treated samples

Fig. 10. Fracture morphologies of as-deposited tensile samples. (a) Macro fracture; (b) Inconel 718 superalloy; (c) 0.5%TiC/Inconel 718 composite; (d) 1%TiC/Inconel 718 composite; (e) high magnification image of 1%TiC/Inconel 718 composite; (f) Ti element map in 1%TiC/Inconel 718 composite