Role of laser power and scan speed combination on the surface quality of additive manufactured nickel-based superalloy

Abstract

In laser-based powder bed fusion (L-PBF), the volumetric energy density (VED) controlled by laser power (LP) and scan speed (SS) significantly affects the desired surface quality. Any variations in the LP and SS on the VED notably affect the surface quality due to changes in laser powder interactions. Therefore, the present study concentrated on the effect of various combinations of LP and SS, i.e. low LP (160 W) with high SS (1250 mm/s), high LP (320 W) with low SS (410 mm/s), low LP (160 W) with low SS (550 mm/s) and high LP (320 W) with high SS (1100 mm/s). The wide range of varying VEDs was chosen between 29 and 177 J/mm3. The results showed the VED range between 66 and 90 J/mm3 exhibited minimum surface roughness parameters of 0.51 < Ra < 0.52 µm, 0.63 < Rq < 0.64 µm, and 2.53 < Rz < 2.79 µm. The specific impact of LP and SS combination between 160 and 320 W with 400–1250 mm/s by maintaining a constant VED of 66 J/mm3 was also investigated. At a constant VED of 66 J/mm3, the combination of 280 W and 960 mm/s shows minimum roughness parameters of Ra = 0.527 µm, Rq = 0.645 µm, and Rz = 2.446 µm. The results showed that the combination of low LP with low SS, high LP with high SS, low LP with high SS, and high LP with low SS, increases surface roughness.

Effect of fused deposition modeling process parameter in influence of mechanical property of acrylonitrile butadiene styrene polymer

“…Similarly, as per earlier research [68][69][70][71] , Young's Modulus significantly influences tensile outcomes. Consequently, sample 3 demonstrates the highest strength at 591 MPa, securing the top position, followed by sample 1 at 571 MPa (second), sample 2 at 556 MPa (third), sample 5 at 502 MPa (fourth), and sample 4 at 496 MPa (fifth).…”

Selection and Optimization of Carbon-Reinforced Polyether Ether Ketone Process Parameters in 3D Printing—A Rotating Component Application

“…Polymers have been increasingly utilized to manufacture rotors in various systems, enhancing the efficiency of blowers and siphons and improving cost-effectiveness [13][14][15]. Industry favours these materials for their affordability, ease of manufacturing, water resistance, and adaptability [16,17].…”

Advancements in 3D printing materials: A comparative analysis of performance and applications

“…The key factor that sets 3D printing apart from traditional manufacturing methods is the wide range of materials that can be used to produce objects with different properties and characteristics. The continuous advancements in 3D printing materials have significantly contributed to the growth and diversification of applications, making it a game-changing technology across industries [1][2][3][4][5][6][7] . One of the most significant benefits of 3D printing materials is their wide range of options.…”