Nano-Structural and Nano-Chemical Analysis of Ni-Base Alloy/Low Alloy Steel Dissimilar Metal Weld Interfaces

Choi, Kyoung Joon; Shin, Sang Hun; Kim, Jong Jin; Jung, Ju Ang; Kim, Ji Hyun

doi:10.5516/net.07.2012.009

Cited by 23 publications

(5 citation statements)

References 13 publications

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“…%) in Each Region Indicated in Fig. 7 other regions, which is similar to what was observed with the secondary ion mass spectrometry and transmission electron microscope analyses performed in the previous study [18]. These results can help to distinguish the chemical difference between the precipitates and the others.…”

Section: Resultssupporting

confidence: 77%

“…The region in the heat affected zone of A533 Gr. B showed the highest hardness [18]. This characteristic shows that this may have degraded through thermal cycling during the weld process with the combination of high residual stress.…”

Section: Discussionmentioning

confidence: 90%

“…The specimens were then washed in acetone and kept under vacuum. In the previous study [18], the chromium carbides were observed using a scanning electron microscope, a transmission electron microscope and a secondary ion mass spectrometry analyses in the FB. Thereby, specimens for 3D APT were prepared near the region containing the FB that was represented in the electron microscope images of Fig.…”

Section: Methodsmentioning

confidence: 99%

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Three Dimensional Atom Probe Study of Ni-Base Alloy/Low Alloy Steel Dissimilar Metal Weld Interfaces

Choi¹,

Shin²,

Kim³

et al. 2012

Nuclear Engineering and Technology

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Section: Resultssupporting

confidence: 77%

Section: Discussionmentioning

confidence: 90%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Three Dimensional Atom Probe Study of Ni-Base Alloy/Low Alloy Steel Dissimilar Metal Weld Interfaces

Choi¹,

Shin²,

Kim³

et al. 2012

Nuclear Engineering and Technology

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“…Interface/surface segregation was also observed by SIMS; however, it did not exceed the component's maximum solubility. Choi et al analyzed a nanostructured Ni-based alloy conjoined via dissimilar weld joints with low alloy steel using SIMS, APT, and TEM [160]. SIMS was employed to construct the chemical map of the alloy constituents at the weld sites, TEM was used to analyze the transition of crystallographic microstructure, and APT was used to determine the chemical composition of specific boundary regions.…”

Section: Nanomaterialsmentioning

confidence: 99%

Secondary Ion Mass Spectral Imaging of Metals and Alloys

Shen,

Howard,

2024

Materials

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Secondary Ion Mass Spectrometry (SIMS) is an outstanding technique for Mass Spectral Imaging (MSI) due to its notable advantages, including high sensitivity, selectivity, and high dynamic range. As a result, SIMS has been employed across many domains of science. In this review, we provide an in-depth overview of the fundamental principles underlying SIMS, followed by an account of the recent development of SIMS instruments. The review encompasses various applications of specific SIMS instruments, notably static SIMS with time-of-flight SIMS (ToF-SIMS) as a widely used platform and dynamic SIMS with Nano SIMS and large geometry SIMS as successful instruments. We particularly focus on SIMS utility in microanalysis and imaging of metals and alloys as materials of interest. Additionally, we discuss the challenges in big SIMS data analysis and give examples of machine leaning (ML) and Artificial Intelligence (AI) for effective MSI data analysis. Finally, we recommend the outlook of SIMS development. It is anticipated that in situ and operando SIMS has the potential to significantly enhance the investigation of metals and alloys by enabling real-time examinations of material surfaces and interfaces during dynamic transformations.

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“…As the chemical composition, mechanical properties, and microstructure of low-alloy steel are significantly different from stainless steel (filler metal), the microstructure of the dissimilar metal cladding, especially at the interfacial area, should be very complex. Hence, many problems arise during the cladding process, including sharp changes in element distribution, mechanical property, and microstructure across the fusion boundary; carbon migration; weld residual stressstrain; and the formation of special boundaries at the fusion boundary area [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Micro-Hardness of Dissimilar Metal Cladding from a Pipe–Nozzle Mockup for PWR

Wang

Ming

Zhang³

et al. 2022

Coatings

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In this study, the dissimilar metal cladding from a pressure vessel pipe–nozzle mockup for PWR was studied using an optical microscope, scanning electron microscopy, energy-dispersive X-ray spectrometry, electron back-scattering diffraction, and micro-hardness measurement. The microstructure of the SA508 side is non-uniform along the fusion boundary, especially at the concave and convex areas. Martensitic layer (type I and type II) boundaries are found at the fusion boundary area. The chemical composition, residual strain, and microstructure across the SA508–309L fusion boundary are very complex and hence result in a complicated micro-hardness distribution.

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Nano-Structural and Nano-Chemical Analysis of Ni-Base Alloy/Low Alloy Steel Dissimilar Metal Weld Interfaces

Cited by 23 publications

References 13 publications

Three Dimensional Atom Probe Study of Ni-Base Alloy/Low Alloy Steel Dissimilar Metal Weld Interfaces

Three Dimensional Atom Probe Study of Ni-Base Alloy/Low Alloy Steel Dissimilar Metal Weld Interfaces

Secondary Ion Mass Spectral Imaging of Metals and Alloys

Microstructure and Micro-Hardness of Dissimilar Metal Cladding from a Pipe–Nozzle Mockup for PWR

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