Fig. 1. SEM images of powder. (a) AlSi7Mg alloy powder; (b) SiC powder; (c)(d) 5%SiC/AlSi7Mg mixed powder

Fig. 2. Cubic sample formed by selective laser melting and size of tensile sample. (a) Cubic sample; (b) tensile sample

Fig. 3. OM images of SiC/AlSi7Mg samples formed at different process parameters

Fig. 4. Variations of relative density of SiC/AlSi7Mg samples with process parameters. (a) Variation with scanning speed; (b) variation with hatch spacing

Fig. 5. XRD patterns and diffraction peaks of AlSi7Mg powder, SiC/AlSi7Mg mixed powder and SiC/AlSi7Mg composite sample. (a) XRD patterns; (b) diffraction peaks

Fig. 6. OM images of SiC/AlSi7Mg composite sample formed by selective laser melting. (a) ×50; (b) ×100; (c) ×500

Fig. 7. Microstructures and EDS analysis of SiC/AlSi7Mg composite sample formed by selective laser melting. (a)(b) OM images; (c)--(f) SEM images; (g) EDS analysis

Fig. 8. Tensile fracture images of SiC/AlSi7Mg composite sample formed by selective laser melting. (a) Fracture; (b) SiC particles; (c) pore; (d)(e) interface