Microstructural, mechanical and wear behaviour of Inconel-718 produced through laser-powder bed-fused additive manufacturing

Jeyaprakash, N.; Yang, Che‐Hua; Ramkumar, K.

doi:10.1080/02670836.2021.1893457

Cited by 36 publications

(10 citation statements)

References 38 publications

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“…The achieved hardness is either comparable or even better than the results reported in similar investigations. 34…”

Section: Resultsmentioning

confidence: 99%

“…The achieved hardness is either comparable or even better than the results reported in similar investigations. 34 The engineering stress-strain graph created for LPBF-manufactured IN718 super alloy is illustrated in Figure 14. The following mechanical characteristics were achieved: elastic modulus 158 ± 28 GPa, YS 850 ± 72 MPa, UTS is 1197 ± 49 MPa and elongation at break 19 ± 3%.…”

Section: Mechanical Properties and Fracture Surface Analysismentioning

confidence: 99%

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Effect of parameters on quality of IN718 parts using laser additive manufacturing

Dwivedi,

Khurana,

Bala

2024

Materials Science and Technology

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The objective of this study is to determine the effect of process parameters such as laser power, scanning speed and layer thickness on the mechanical properties, microstructure and fracture mechanism of Inconel 718 using laser powder bed fusion additive manufacturing process. Full factorial design, regression modelling and response surface methodology are used to optimise the process parameters. The highest tensile strength occurs at 350 W laser power, 1300 mm/s scanning speed and 30 µm layer thickness. The optimal parameters for multi-objective optimisation are identical to those used for single-objective optimisation for tensile strength. The difference between the predicted and actual tensile strength is 0.33%. This work shows a successful methodology using IN718 superalloy for various applications in aerospace industry.

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“…The achieved hardness is either comparable or even better than the results reported in similar investigations. 34…”

Section: Resultsmentioning

confidence: 99%

Section: Mechanical Properties and Fracture Surface Analysismentioning

confidence: 99%

Effect of parameters on quality of IN718 parts using laser additive manufacturing

Dwivedi,

Khurana,

Bala

2024

Materials Science and Technology

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“…They optimized the microstructure using a combination of heat treatment which was comprised of solutionization at different temperatures followed by a standard double aging procedure. H1, H2, and H3 were the names given to the specimen corresponding to the 76 solutionization temperature of 940 • C, 980 • C, and 1020 • C and H0 is an untreated sample. The low wear rates of H2 and H3 specimens correspond to the microstructure with uniform distribution of γ′ and γ′′ precipitates throughout the sample.…”

Section: Friction and Wear Behavior Of Inconel-718mentioning

confidence: 99%

“…Figure 14. Comparison of (a,b) coefficient of friction and (c) wear rate between non-heated and other heat-treated Inconel-718 alloy (adapted after obtaining permission from Taylor & Francis) 76. …”

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confidence: 99%

A review on tribological behavior of nickel-based Inconel superalloy

Dubey,

Mukherjee,

Singh

2024

Proceedings of the Institution of Mechanical Engineers, Part J:

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Superalloys are a group of engineering alloys designed to operate at elevated temperatures, and they find application in various engineering sectors where a high-temperature application is required such as nuclear power plants, steam turbines, and aircraft. There are three important classes of superalloys, that is, iron-based, cobalt-based, and nickel-based superalloys. Among them, nickel-based superalloys find great application at both low and high temperatures due to their higher mechanical strength, good fatigue life, excellent wear, and corrosive resistance. This review article aims to review the tribological studies of the nickel-based Inconel superalloys. The article deals with the systematic studies of wear behavior, wear mechanism, and nanostructured glaze layer formation over the wear surfaces. The effect of load and temperatures influencing the wear rate and wear mechanisms of nickel-based superalloys are also discussed in detail. Along with that, the focus of this review article is to discuss the advancement in the tribological studies of the Inconel-718 superalloy. The development in the Inconel-718 alloys (surface alloying, laser shot peening, composites, microstructure engineering, etc.) to improve wear resistance is also discussed in a systematic manner. This article is expected to assist the researchers in identifying the trend and research gaps so that they can contribute to further tribological developments of nickel-based superalloys.

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“…In situ precipitation has been demonstrated by Yang et al [132] via adjustments of the thermal cycles placing the laser peak temperature between the precipitation temperature and the melting temperature. Some investigations only provide evidence of c 00 precipitation via XRD [133,162,163], however, in this technique overlapping diffraction peaks between the c matrix and the precipitate phases of interest might jeopardize an accurate determination of precipitate presence or lack thereof, as mentioned above. In these circumstances, synchrotron XRD provides higher resolution and better separation of the peaks, facilitating the evaluation of the phases in the material [164].…”

Section: Matrix Phasementioning

confidence: 99%

Powder bed fusion additive manufacturing of Ni-based superalloys: a review of the main microstructural constituents and characterization techniques

et al. 2022

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Metal additive manufacturing (AM) has unlocked unique opportunities for making complex Ni-based superalloy parts with reduced material waste, development costs, and production lead times. Considering the available AM methods, powder bed fusion (PBF) processes, using either laser or electron beams as high energy sources, have the potential to print complex geometries with a high level of microstructural control. PBF is highly suited for the development of next generation components for the defense, aerospace, and automotive industries. A better understanding of the as-built microstructure evolution during PBF of Ni-based superalloys is important to both industry and academia because of its impacts on mechanical, corrosion, and other technological properties, and, because it determines post-processing heat treatment requirements. The primary focus of this review is to outline the individual phase formations and morphologies in Ni-based superalloys, and their correlation to PBF printing parameters. Given the hierarchal nature of the microstructures formed during PBF, detailed descriptions of the evolution of each microstructural constituent are required to enable microstructure control. Ni-based superalloys microstructures commonly include γ, γ′, γ′′, $$\delta$$ δ , TCP, carbides, nitrides, oxides, and borides, dependent on their composition. A thorough characterization of these phases remains challenging due to the multi-scale microstructural hierarchy alongside with experimental challenges related to imaging secondary phases that are often nanoscale and (semi)-coherent. Hence, a detailed discussion of advanced characterization techniques is the second focus of this review, to enable a more complete understanding of the microstructural evolution in Ni-based superalloys printed using PBF. This is with an expressed goal of directing the research community toward the tools necessary for a thorough investigation of the processing-microstructure-property relationships in PBF Ni-based superalloy parts to enable microstructural engineering.

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Microstructural, mechanical and wear behaviour of Inconel-718 produced through laser-powder bed-fused additive manufacturing

Cited by 36 publications

References 38 publications

Effect of parameters on quality of IN718 parts using laser additive manufacturing

Effect of parameters on quality of IN718 parts using laser additive manufacturing

A review on tribological behavior of nickel-based Inconel superalloy

Powder bed fusion additive manufacturing of Ni-based superalloys: a review of the main microstructural constituents and characterization techniques

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