Inconel 718 produced by laser powder bed fusion: an overview of the influence of processing parameters on microstructural and mechanical properties

Marques, Ana; Cunha, Ângela; Silva, Mariana Rodrigues; Osendi, María Isabel; Silva, Filipe; Carvalho, Ó.; Bartolomeu, F.

doi:10.1007/s00170-022-09693-0

Cited by 28 publications

(3 citation statements)

References 152 publications

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“…In718, a nickel-based superalloy initially developed for hightemperature applications due to its commendable strength, creep resistance, and fatigue life, was chosen for this study. Although previous research on additive manufacturing (AM) of In718 primarily focused on mechanical properties [45][46][47][48], its chemical composition closely aligns with commercial nickel foams and is compatible with effective catalysts such as nickel and nickel-iron [49,50]. Moreover, In718 exhibits excellent printability, and its commercially available powder renders it advantageous for cost-effective fabrication of high-quality electrodes through LPBF.…”

Section: Introductionmentioning

confidence: 99%

Framework for Additive Manufacturing of Porous Inconel 718 for Electrochemical Applications

Zafari,

Kiran,

Gimenez-Garcia

et al. 2023

Preprint

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Section: Introductionmentioning

confidence: 99%

Framework for Additive Manufacturing of Porous Inconel 718 for Electrochemical Applications

Zafari,

Kiran,

Gimenez-Garcia

et al. 2023

Preprint

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“…Research indicates that the LPBF manufacturing technology can produce high-performance metal materials. [5][6][7][8][9][10] On the other hand, the LPBF technology enables fine control over the composition of alloy materials and the fabrication of complex structures and special material compositions. For example, it can produce nickel-based alloys with directional solidification.…”

Section: Introductionmentioning

confidence: 99%

Study on Morphology, Microstructure, and Tribo‐Corrosion Behavior of Laser‐Powder‐Bed‐Fusion‐Fabricated Titanium Alloy

Lu,

Wang,

2023

Adv Eng Mater

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The complicated interplay between microstructure and tribo‐corrosion behavior has long been an intriguing problem in the field of advanced materials engineering. This study systematically investigated the effects of different laser energy densities (LED) on the surface morphology, microstructure, and tribo‐corrosion behavior of Ti‐6Al‐4V produced using laser powder bed fusion (LPBF) technology. The surface morphology and microstructure of the specimens were characterized in detail using various characterization techniques such as optical microscopy (OM), scanning electron microscopy (SEM), and X‐ray diffraction (XRD). Additionally, a self‐assembled friction‐corrosion equipment was employed to evaluate the tribo‐corrosion behavior of the samples at different LED settings. The results showed that the LED had a significant effect on the surface morphology, microstructure, and tribo‐corrosion behavior of the Ti‐6Al‐4V. Increasing the LED lead to reduced surface roughness, weakened keyhole and segregation phenomena, more distinct β grain boundaries, and coarser acicular α phase. Moreover, the tribo‐corrosion behavior initially improved and then declined with increasing LED. Furthermore, tribo‐corrosion product and mechanism of the Ti‐6Al‐4V alloy prepared by LPBF were revealed. This study is of great significance for understanding the relationship between the microstructure and tribo‐corrosion behavior of Ti‐6Al‐4V manufactured by LPBF.This article is protected by copyright. All rights reserved.

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“…The L-PBF process is considered complex process due to several interrelated process parameters. 32 It is usually challenging to define the interrelationships between all the process parameters. According to the literature, more than energy intake, the appropriate process parameter combination is required to determine the surface quality of the parts.…”

Section: Introductionmentioning

confidence: 99%

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

Praveenkumar,

Raja,

Jamadon

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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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.

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Inconel 718 produced by laser powder bed fusion: an overview of the influence of processing parameters on microstructural and mechanical properties

Cited by 28 publications

References 152 publications

Framework for Additive Manufacturing of Porous Inconel 718 for Electrochemical Applications

Framework for Additive Manufacturing of Porous Inconel 718 for Electrochemical Applications

Study on Morphology, Microstructure, and Tribo‐Corrosion Behavior of Laser‐Powder‐Bed‐Fusion‐Fabricated Titanium Alloy

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

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