Mechanical Properties of Inconel Alloy 718 Produced by 3D Printing using DMLS

Daňa, Milan; Zetková, Ivana; Mach, Jan

doi:10.21062/ujep/137.2018/a/1213-2489/mt/18/4/559

Cited by 9 publications

(4 citation statements)

References 8 publications

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“…Effective strength modulus

is found from experimental characterization. The Young’s modulus of full solid support was taken as 160 GPa, reported in the standard material datasheet of EOS Nickel Alloy IN718, made from EOS M280 machine using EOS recommended process parameters in the vertical Z direction [ 20 ]. Thermal absorptivity of 0.4, the thermal conductivity of solid sintered support taken as 9.1 W/mK and surrounding loose powder as 1.96 W/mK from a similar reference FE model were developed by Luo et al [ 21 ] for the same material and process parameter in ambient conditions.…”

Section: Methodsmentioning

confidence: 99%

Distortion Prediction in Inconel-718 Part Fabricated through LPBF by Using Homogenized Support Properties from Experiments and Numerical Simulation

et al. 2022

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The Laser Powder-Bed Fusion (LPBF) process produces complex part geometry by selectively sintering powder metal layer upon layer. During the LPBF process, parts experience the challenge of residual stress, distortions, and print failures. Lattice-based structures are used to support overhang parts and reduce distortion; this lattice support has complex geometry and demands high computational effort to predict distortion using simulation. This study proposes a computational efforts reduction strategy by replacing complex lattice support geometry with homogenization using experimentally determined mechanical properties. Many homogenization models have been established to relate the lattice topology and material properties to the observed mechanical properties, like the Gibson–Ashby model. However, these predicted properties vary from as printed lattice geometry. In this work, the power-law relationship of mechanical properties for additively manufactured Inconel 718 part is obtained using tensile tests of various lattice support topologies and the model is used for homogenization in simulation. The model’s accuracy in predicting distortion in printed parts is demonstrated using simulation results for a cantilever model. Simulation studies show that computational speed is significantly increased (6–7 times) using the homogenization technique without compromising the accuracy of distortion prediction.

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“…Effective strength modulus

Section: Methodsmentioning

confidence: 99%

Distortion Prediction in Inconel-718 Part Fabricated through LPBF by Using Homogenized Support Properties from Experiments and Numerical Simulation

et al. 2022

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“…Also, the largest differences in strain values were observed in the z direction rather than the x direction. High yield strength and hardness were achieved in a DMLSed 17-4 stainless steel through heat treatment at 755 K. The corrosive behaviour of heat-treated DMLSed Inconel 718 superalloy is better than that of conventionally manufactured superalloys because of the separation of more nickel, molybdenum and oxygen [4–8].…”

Section: Introductionmentioning

confidence: 99%

Investigations of performance characteristics on direct metal laser sintered MONEL K-500 superalloy

Mani,

Mohanraj,

Karthikeyan

et al. 2023

Materials Science and Technology

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MONEL K-500 superalloy is difficult to manufacture precisely in traditional manufacturing processes like casting, forming and machining. The direct metal laser sintering (DMLS) process is one of the best metal additive manufacturing processes used in this work. In this work, Laser Power (LP), Scan Speed (SS), Hatch Distance (HD) and Layer Thickness (LT) are used as DMLS process parameters. L09 Orthogonal array is used for printing the MONEL K-500 metal parts. The performance characteristics like ultimate tensile strength (UTS) and surface toughness ( Ra) are improved by 2% and 17% for the Taguchi optimum parameter levels. Contour plots explained the interaction effects of DMLS process parameters on performance characteristics. The better microstructural characteristics obtained the higher optimum parameter level.

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“…The AM method used to manufacture metal products is Laser Power Bed Fusion method. One of the LPBF technique used to manufacture impeller is Direct Metal Laser Sintering (DMLS) [8,9,10,11,12] as it has a wide range of materials such as Stainless steel 316l, Inconel718, Ti6Al4V, Stainless steel 17-PH. The principle behind this method is the application of thin layers of metal powder using a re-coater blade.…”

Section: Introductionmentioning

confidence: 99%

Simulation Analysis of Additive Manufacturing of Impeller

Varsha¹,

Rani²

2021

CVRJST

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An Impeller is the rotating component of a pump; it transfers the energy from the motor to the fluid and accelerates the fluid to build up pressure. Impellers are manufactured using Additive Manufacturing (AM) technology. It is a technology that produces three-dimensional parts layer by layer from a variety of materials such as plastics, polymers and metals. The impeller is usually made up of Stainless Steel 316L, Inconel 718. AM technique used to manufacture impeller is Direct Metal Laser Sintering (DMLS). The main objective of this paper is to conduct simulation analysis of additive manufacturing of an impeller by varying process-parameters such as Power, Wall-thickness and Angle and recommend a suitable material with minimum von-misses stress, minimum displacement and minimum of maximum temperature using Amphyon software. Simulation analysis is performed on two different materials i.e., Stainless Steel 316L and Inconel 718 by varying process parameters such as Power at 200 to 400W, Wall thickness at 0.5 to 0.8mm and Angle at 0 0 to 6 0 . Amphyon is a modular pre-processing and simulation software for Laser Beam Melting (LBM) processes. The simulation results were analyzed and optimization for Stainless-Steel 316L material impeller was done using one of the MADM methods i.e., Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) method. Later, the results of the two different materials (i.e., Stainless Steel 316L and Inconel 718) were compared. Stainless Steel 316L was found to have minimum von-misses stress, minimum displacement and minimum of maximum temperature at 200W power, 0.5mm wall-thickness and 0 0 angle.

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Mechanical Properties of Inconel Alloy 718 Produced by 3D Printing using DMLS

Cited by 9 publications

References 8 publications

Distortion Prediction in Inconel-718 Part Fabricated through LPBF by Using Homogenized Support Properties from Experiments and Numerical Simulation

Distortion Prediction in Inconel-718 Part Fabricated through LPBF by Using Homogenized Support Properties from Experiments and Numerical Simulation

Investigations of performance characteristics on direct metal laser sintered MONEL K-500 superalloy

Simulation Analysis of Additive Manufacturing of Impeller

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