Influence of a rescanning strategy with different laser powers on the microstructure and mechanical properties of Hastelloy X elaborated by powder bed fusion

The present study investigates the influence of a rescanning strategy on microstructure and mechanical properties Hastelloy X samples manufactured by laser powder bed fusion process in additive manufacturing. After first lasing leading to melting, second is performed solid metal with five considered powers corresponding 100-80-60-40 20% power scan. obtained from these elaboration strategies were then compared those conventional without heat treatment. Using electron microscopy, monotonic loading/unloading tensile tests, results revealed that elaborated are characterized weaker crystallographic texture, lower backstress larger ductility parameters. However, modifications induced scan, depend scanning power, better observed for decrease 40% during Such may be suitable optimize but also potentially avoid post-elaboration treatments.