Characterization of Additive Manufactured Inconel 718 Alloy Using Laser Cladding

Burad, Prayag; Chaitanya, G.; Thawari, Nikhil; Bhatt, Jatin; Gupta, T.V.K.

doi:10.4028/www.scientific.net/kem.882.3

Cited by 5 publications

References 21 publications

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Microstructure Evolution of TiC/Inconel 718 Composites Prepared by Direct Energy Deposition

et al. 2023

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TiC/Inconel 718 alloys with different TiC contents are prepared by direct energy deposition technology. The influence of laser power on the microstructure evolution and mechanical properties of the specimens is investigated. According to the microstructure evolution and mechanical properties, it can be observed that the different TiC contents of specimens have the appropriate laser power. The excessive laser power could lead to the generation and coarsening of the Laves phase, and the increasing of dendrite spacing, which causes the formation of cracks. The appropriate laser powers are respectively 1800 and 2000 W when the TiC contents are 5 and 10 wt%. When the TiC content is 15 wt% and laser power is 2000 W, the good metallurgical bond and refined microstructure of the specimens without penetrating cracks are obtained. The penetrating cracks of the specimens have form when TiC content is 20 wt%, which indicates that the TiC maximum content of TiC/Inconel 718 composites should be less than 20 wt% when the laser power does not exceed 2000 W. With the increasing of laser power, the difference of theoretical density between actual density is reduced and the average hardness is not changed.

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Microstructure Evolution of TiC/Inconel 718 Composites Prepared by Direct Energy Deposition

et al. 2023

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Effect of TiC Content on Mechanical Properties and Microstructure Evolution of TiC/Inconel 718 Functionally Gradient Materials by Direct Energy Deposition

et al. 2023

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TiC/Inconel 718 functionally gradient materials are prepared by direct energy deposition technology. The effect of TiC content on microstructure and mechanical properties of TiC/Inconel 718 functionally gradient materials is studied. With the increase of TiC content, the microhardness and carbide grain of the specimen are improved, and the density is reduced. The grain of the specimen changes from columnar dendrites to equiaxed crystal, and the equiaxed crystal size is decreased with the increase of TiC content. However, when TiC content is above 10 wt%, the number and size of the Laves phase, coarse TiC primary, and TiC secondary dendrite are increased which causes the generation of cracks. When the TiC content is above 5 wt%, the size of carbide and the number of cracked UMT increase and the impact toughness decreases. Therefore, the optimal maximum TiC content of TiC/Inconel 718 functionally gradient materials is 5 wt% when the laser power is 2200 W.

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Direct Laser-Deposited IN718 Alloy: Effect of Heat Treatment Route on Microstructural Evolution and Mechanical Properties

Burad

Gullipalli²,

Thawari³

et al. 2022

J. of Materi Eng and Perform

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Characterization of Additive Manufactured Inconel 718 Alloy Using Laser Cladding

Cited by 5 publications

References 21 publications

Microstructure Evolution of TiC/Inconel 718 Composites Prepared by Direct Energy Deposition

Microstructure Evolution of TiC/Inconel 718 Composites Prepared by Direct Energy Deposition

Effect of TiC Content on Mechanical Properties and Microstructure Evolution of TiC/Inconel 718 Functionally Gradient Materials by Direct Energy Deposition

Direct Laser-Deposited IN718 Alloy: Effect of Heat Treatment Route on Microstructural Evolution and Mechanical Properties

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