In-situ and ex-situ comparison of oxidation of Inconel 718 manufactured by selective laser melting and conventional methods up to 650 °C

Beyhaghi, Maryam; Rouhani, M. Djafari; Hobley, Jonathan; Jeng, Yeau-Ren

doi:10.1016/j.apsusc.2021.151037

Cited by 20 publications

(2 citation statements)

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“…[40][41][42][43] In particular, Beyhaghi et al demonstrate that Raman spectroscopy can be used to investigate the oxidation behavior of Inconel 718 (IN718) at different post-treatment temperatures. 44 As is known, the unavoidable oxidation phenomenon during the SLM process hinders its development from reaching an even higher accuracy. The high temperature drives the raw metal powder to react with oxygen, water vapor, etc.…”

Section: Introductionmentioning

confidence: 99%

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The mechanism of sample composition variation in the selective laser melting process based on the laser-induced breakdown spectroscopy and Raman system detection

Lin,

Li,

Lin

et al. 2024

J. Anal. At. Spectrom.

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Section: Introductionmentioning

confidence: 99%

“…40–43 In particular, Beyhaghi et al demonstrate that Raman spectroscopy can be used to investigate the oxidation behavior of Inconel 718 (IN718) at different post-treatment temperatures. 44…”

Section: Introductionmentioning

confidence: 99%

The mechanism of sample composition variation in the selective laser melting process based on the laser-induced breakdown spectroscopy and Raman system detection

Lin,

Li,

Lin

et al. 2024

J. Anal. At. Spectrom.

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Clinical implications of linking microstructure, spatial biochemical, spatial biomechanical, and radiological features in ligamentum flavum degeneration

Azril,

Huang,

Liu

et al. 2024

JOR Spine

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BackgroundThe ligamentum flavum (LF) degeneration is a critical factor in spinal stenosis, leading to nerve compression and pain. Even with new treatment options becoming available, it is vital to have a better understanding of LF degeneration to ensure the effectiveness of these treatments.ObjectiveThis study aimed to provide insight into LF degeneration by examining the connections between various aspects of LF degeneration, including histology, microstructure, chemical composition, and biomechanics.MethodWe analyzed 30 LF samples from 27 patients with lumbar vertebrae, employing magnetic resonance imaging (MRI) to link lumbar disc degeneration grades with fibrosis levels in the tissue. X‐ray diffraction (XRD) analysis assessed microstructural alterations in the LF matrix component due to degeneration progression. Instrumented nanoindentation combined with Raman spectroscopy explored the spatial microbiomechanical and biochemical characteristics of the LF's ventral and dorsal regions.ResultsOur outcomes revealed a clear association between the severity of LF fibrosis grades and increasing LF thickness. XRD analysis showed a rise in crystalline components and hydroxyapatite molecules with progressing degeneration. Raman spectroscopy detected changes in the ratio of phosphate, proteoglycan, and proline/hydroxyproline over the amide I band, indicating alterations in the extracellular matrix composition. Biomechanical testing demonstrated that LF tissue becomes stiffer and less extensible with increasing fibrosis.DiscussionNotably, the micro‐spatial assessment revealed the dorsal side of the LF experiencing more significant mechanical stress, alongside more pronounced biochemical and biomechanical changes compared to the ventral side. Degeneration of the LF involves complex processes that affect tissue histology, chemical composition, and biomechanics. It is crucial to fully understand these changes to develop new and effective treatments for spinal stenosis. These findings can improve diagnostic accuracy, identify potential biomarkers and treatment targets, guide personalized treatment strategies, advance tissue engineering approaches, help make informed clinical decisions, and educate patients about LF degeneration.

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A Comprehensive Review on the High-Temperature Behavior of Additively Manufactured Inconel 718

Chaudhari,

Wakchaure

2024

Lecture Notes in Mechanical Engineering

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In-situ and ex-situ comparison of oxidation of Inconel 718 manufactured by selective laser melting and conventional methods up to 650 °C

Cited by 20 publications

References 45 publications

The mechanism of sample composition variation in the selective laser melting process based on the laser-induced breakdown spectroscopy and Raman system detection

The mechanism of sample composition variation in the selective laser melting process based on the laser-induced breakdown spectroscopy and Raman system detection

Clinical implications of linking microstructure, spatial biochemical, spatial biomechanical, and radiological features in ligamentum flavum degeneration

A Comprehensive Review on the High-Temperature Behavior of Additively Manufactured Inconel 718

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