Blown powder directed energy deposition on various substrate conditions

Naesstroem, Himani; Brueckner, Frank; Kaplan, Alexander

doi:10.1016/j.jmapro.2021.11.048

Cited by 9 publications

(1 citation statement)

References 14 publications

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“…During consolidation, only a portion of the total powder will be melted and bonded to the substrate [46]. The DED process creates structures with good metallurgical bonds in between layers and from the part to the substrate [59,69]. Due to the extra freedom that comes with the additional design parameters that DED offers, it is suitable for the quick manufacturing of sizable parts with complex shapes.…”

Section: Dedmentioning

confidence: 99%

Progress and Challenges of Additive Manufacturing of Tungsten and Alloys as Plasma-Facing Materials

Howard,

Parker,

2024

Materials

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Tungsten (W) and W alloys are considered as primary candidates for plasma-facing components (PFCs) that must perform in severe environments in terms of temperature, neutron fluxes, plasma effects, and irradiation bombardment. These materials are notoriously difficult to produce using additive manufacturing (AM) methods due to issues inherent to these techniques. The progress on applying AM techniques to W-based PFC applications is reviewed and the technical issues in selected manufacturing methods are discussed in this review. Specifically, we focus on the recent development and applications of laser powder bed fusion (LPBF), electron beam melting (EBM), and direct energy deposition (DED) in W materials due to their abilities to preserve the properties of W as potential PFCs. Additionally, the existing literature on irradiation effects on W and W alloys is surveyed, with possible solutions to those issues therein addressed. Finally, the gaps in possible future research on additively manufactured W are identified and outlined.

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Section: Dedmentioning

confidence: 99%

Progress and Challenges of Additive Manufacturing of Tungsten and Alloys as Plasma-Facing Materials

Howard,

Parker,

2024

Materials

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Microstructure Evolution of Powder‐Mixed Inconel718‐xRene88DT Alloy Fabricated by Direct Laser Deposition

Li,

Jia,

Sun

et al. 2024

Adv Eng Mater

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By regulating Inconel718‐xRene88DT (x = 0–100%) alloy powder, microstructure evolution and microsegregation of as‐deposited samples fabricated by direct energy deposition (DED) are investigated. The novelty of this approach lies in the systematic regulation of the alloy composition to study its impact on microstructure and microsegregation, which is an important prerequisite to improving the performance of DED superalloys. It is found that the as‐deposited microstructure mainly consists of predominant γ columnar dendrites directionally growing along the deposition direction. With the increase of Rene88DT proportion, thelayered structure tends to be more obvious, and the amount and size of γ′ phase increases. The content of the Laves phase is in decline. As a result of the microsegregation, the needlelike δ (Ni3Nb) and lath‐shaped η (Ni3Ti) precipitate in the interdendritic regions when the proportion of Rene88DT is above 60%. The various microstructures, microsegregation, and their correlations at different proportions of Rene88DT DED samples are discussed. The relationship between composition and microstructure evolution is investigated based on the alloying mechanism, which can guide alloy design and process optimization for enhanced properties in AM‐built Ni‐based superalloys.

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Experimental Study of Low-Temperature Directed Energy Deposition Near Freezing Point Temperature 0°C

Zhang

Kishore

et al. 2023

JOM

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Blown powder directed energy deposition on various substrate conditions

Cited by 9 publications

References 14 publications

Progress and Challenges of Additive Manufacturing of Tungsten and Alloys as Plasma-Facing Materials

Progress and Challenges of Additive Manufacturing of Tungsten and Alloys as Plasma-Facing Materials

Microstructure Evolution of Powder‐Mixed Inconel718‐xRene88DT Alloy Fabricated by Direct Laser Deposition

Experimental Study of Low-Temperature Directed Energy Deposition Near Freezing Point Temperature 0°C

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