Fig. 1 a Particle morphology and b particle size distribution of Inconel 625 alloy, c schematic of the samples in the orientation, d the fabricated samples

Fig. 2 XRD patterns of original Inconel 625 powder and samples fabricated by LPBF process with different building directions

Fig. 3 OM images of LPBF-processed Inconel 625 alloy: a 0° sample, b 45° sample, c 90° sample

Fig. 4 SEM images of grain morphology in molten pool of sample

Fig. 5 SEM images and their corresponding energy-dispersive X-ray (EDX) composition maps of 90° sample

Fig. 6 Internal surface IPF and PF of Inconel 625 alloy formed by LPBF by using three building strategies: a1 and b1 0° sample, a2 and b2 45°sample, a3 and b3 90° sample

Fig. 7 Stress-strain curve a, strength and elongation distribution histogram b of LPBF-fabricated Inconel 625 alloy

Fig. 8 SEM micrographs displaying the fracture surface after room temperature tensile tests: a1-a3 0° sample, b1-b3 45° sample, c1-c3 90° sample

Fig. 9 Tensile stress-strain curves of the LPBF Inconel 625 alloy at a 200 °C, b 400 °C and c 600 °C, d showing the work hardening characteristics at the tensile temperature of 600 °C

Fig. 10 SEM images showing the fracture morphologies of the 0° a1-a3, 45° b1-b3 and 90° c1-c3 samples under tensile testing at 200 °C a1, b1 and c1, 400 °C a2, b2 and c2, and 600 °C a3, b3 and c3

Fig. 11 Schmid factors of 0° sample a1 and b1, 45° sample a2 and b2, and 90° sample a3 and c3

Fig. 12 OM images showing the deformed microstructures of 0°, 45°, 90° samples with different temperatures that are close to the fractures

Fig. 13 The enlarged image of the tensile stress-strain curves at a 400 °C, b 600 °C

Fig. 14 Anisotropy rate of ultimate tensile strength, yield strength and ductility between 0° sample and 45° sample a-c, between 0° sample and 90° sample d-f, as the tensile temperature increased from room temperature to 600 °C