Toward Process-Based Quality through a Fundamental Understanding of Weld Microstructural Evolution

Babu, S. S.

doi:10.29391/2018.97.001

2018

DOI: 10.29391/2018.97.001

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Toward Process-Based Quality through a Fundamental Understanding of Weld Microstructural Evolution

S. S. Babu¹

Abstract: Qualifying welded components by integrating software and hardware tools that are capable of describing physical processes that occur during welding was explored

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Cited by 7 publications

References 13 publications

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In-Situ Monitoring for Defect Identification in Nickel Alloy Complex Geometries Fabricated by L-PBF Additive Manufacturing

McNeil

Sisco

Frederick

et al. 2020

Metall Mater Trans A

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Published literature shows defect formation during laser powder bed fusion additive manufacturing (AM) of nickel base superalloys are sensitive to alloy chemistry, processing conditions, and geometry. In this work, ability to detect spatial distributions of defects is explored using in-situ monitoring of thermal signatures and surfaces. Simple and complex geometrical components were fabricated with CM247-LCÒ powder in an AM machine outfitted with optical and thermal sensors. The spatial and temporal variations of thermal signatures (peak intensity, decay, and number of gyrations), as well as, layer-by-layer optical images were analyzed. The observed thermal signatures were also verified with an analytical model for layer-wise heat transfer simulation that is sensitive to laser raster scan strategies. The cross-comparison data with reference to defects, obtained by X-ray tomography, were correlated with in-situ observations.

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In-Situ Monitoring for Defect Identification in Nickel Alloy Complex Geometries Fabricated by L-PBF Additive Manufacturing

McNeil

Sisco

Frederick

et al. 2020

Metall Mater Trans A

View full text Add to dashboard Cite

show abstract

Qualification pathways for additively manufactured components for nuclear applications

Hensley

Sisco

Beauchamp

et al. 2021

Journal of Nuclear Materials

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On the formation of spherical metastable BCC single crystal spatter particles during laser powder bed fusion

et al. 2020

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Toward Process-Based Quality through a Fundamental Understanding of Weld Microstructural Evolution

Abstract: Qualifying welded components by integrating software and hardware tools that are capable of describing physical processes that occur during welding was explored

Cited by 7 publications

References 13 publications

In-Situ Monitoring for Defect Identification in Nickel Alloy Complex Geometries Fabricated by L-PBF Additive Manufacturing

In-Situ Monitoring for Defect Identification in Nickel Alloy Complex Geometries Fabricated by L-PBF Additive Manufacturing

Qualification pathways for additively manufactured components for nuclear applications

On the formation of spherical metastable BCC single crystal spatter particles during laser powder bed fusion

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