Fig. 1. Morphologies of AlSi10Mg powder

Fig. 2. Particle distribution of AlSi10Mg powder

Fig. 3. Scanning strategy and size of tensile samples. (a) Scanning strategy; (b) size of tensile sample

Fig. 4. XRD spectra of AlSi10Mg samples formed at different laser powers. (a) 20°~90°;(b) 36°~48°

Fig. 5. Melting tracks on the upper surface of AlSi10Mg samples formed at different laser powers. (a) 250 W; (b) 300 W; (c) 350 W; (d) 400 W

Fig. 6. Optical micrographs of the surface of AlSi10Mg samples formed at different laser powers. (a) 250 W; (b) 300 W; (c) 350 W; (d) 400 W

Fig. 7. Relative density of AlSi10Mg samples formed at different laser powers

Fig. 8. Microstructures of AlSi10Mg sample formed by SLM. (a) Microstructure at low magnification; (b) fine grained region; (c) heat affected zone; (d) coarse grained region

Fig. 9. Energy spectrum analysis. (a)‒(c) Energy spectra of white network phase and gray-black matrix; (d) elements contents obtained by point-scanning

Fig. 10. Fine grained region at different laser powers. (a) 250 W; (b) 300 W; (c) 350 W; (d) 400 W

Fig. 11. Load-indentation depth curves of AlSi10Mg samples formed at different laser powers

Fig. 12. Variation of micro-hardness of AlSi10Mg samples with laser power

Fig. 13. Tensile stress-strain curves of AlSi10Mg samples formed at different laser powers

Fig. 14. Tensile strength and elongation of AlSi10Mg samples formed at different laser powers

Fig. 15. Tensile fracture morphologies of AlSi10Mg sample