Fig. 1. Morphology and particle size of GH3536 alloy powder. (a) SEM morphology; (b) particle size distribution

Fig. 2. Scanning strategy of GH3536 alloy specimens formed by ML-PBF with different laser powers

Fig. 3. Measured relative density and porosity. (a) Relative density and porosity; (b)‒(e) micro-pores morphology in the overlap region of specimens of groups 1, 2, 3 and 4

Fig. 4. XRD results of four groups of specimens in the overlap region

Fig. 5. Scanning electron micrographs of the upper surface of the overlap region. (a) Group 1; (b) group 2; (c) group 3; (d) group 4

Fig. 6. Scanning electron micrographs of overlap region grains in the building direction. (a) Group 1; (b) group 2; (c) group 3; (d) group 4

Fig. 7. EBSD results of overlap region in the building direction. (a)(d)(g)(j) Inverse pole figures (IPFs); (b)(e)(h)(k) grain size statistics; (c)(f)(i)(l) misorientation angle statistics

Fig. 8. Scatter plots and linear fit of d_ψ and sin²ψ. (a) Group 1; (b) group 2; (c) group 3; (d) group 4

Fig. 9. Hardness statistics of overlap region

Fig. 10. Tensile properties of four groups of specimens. (a) Horizontal stress-strain curves; (b) horizontal yield strength, tensile strength and elongation