Fig. 1. Concept Laser XLine 1000R laser-selective melt molding machine

Fig. 2. Schematic diagram of the specimen molding direction

Fig. 3. Illustration of fatigue specimens. (a) Smooth bar; (b) notched bar

Fig. 4. Annealed organization of AlSi10Mg. (a) X/Y surface; (b) Z surface

Fig. 5. Microstructures of the melt pool of the heat-treated specimen. (a) Melt pool boundary; (b) melt pool interior

Fig. 6. S-N curves of the SLM-molded AlSi10Mg alloy

Fig. 7. Macroscopic morphology of the fatigue fracture of the SLM-molded AlSi10Mg alloy. (a) 240 MPa; (b) 200 MPa; (c) 176 MPa; (d) 152 MPa

Fig. 8. Macroscopic morphology of the fatigue fracture of the SLM-molded AlSi10Mg alloy notched specimens. (a) 150 MPa, Z; (b) 100 MPa, Z; (c) 150 MPa, X/Y; (d) 96 MPa, X/Y

Fig. 9. Microscopic morphology of the fatigue sources of the SLM-molded AlSi10Mg alloy. (a) Surface inclusion defects; (b) surface damage slip accompanied by inclusion defects; (c) near-surface hole defects

Fig. 10. Microscopic morphology of the fatigue crack extension zone of the SLM-molded AlSi10Mg alloy. (a) Radial streak; (b) fatigue glow pattern

Fig. 11. Fatigue fracture morphology of the SLM-molded AlSi10Mg alloy. (a) Junction of the fatigue crack extension zone and the transient fracture zone; (b) (c) toughness fossa morphology and tear prism morphology of the transient fracture zone

Fig. 12. Microscopic morphology of the transient fracture zone of the SLM-molded AlSi10Mg alloy notched specimens. (a) Slip band; (b) tough fossa morphology; (c) torn lamellae