Selective laser melting of Inconel 601 alloy using nanosecond fibre laser

The paper describes the impact of selective laser melting factors including using a nanosecond fibre laser, powers, scanning speed, and thickness layer, on relative density micro hardness Vickers IN 601 samples was studied. Selective (SLM) is commonly used powder bed fusion metal additive manufacturing (AM). Recent advances in have attracted significant industrial interest, especially for producing metallic parts. Scanning electron microscopy (SEM), EDX other techniques were utilized studying effect speed power densification behaviour, microstructural evolution Inconel v alloy that processed by SLM. With VED 3200 J/mm3, scan 250 mm/s with 80 W, cracks about 79-93 µm voids (4.5 – 5.7) diameter realised. Moreover, best 394 HV attained W power. However, increasing energy to more than required values increased porosity decreased hardness. Using microsecond SLM leads achievement full (almost 99.5%), whereas allows less (75-95%), which will be very useful functions require porous structure weight, such as those aerospace applications, automotive industry so on.