X-ray fluorescence microtomography based on polycapillary-focused X-rays from laboratory source

Feng, Binggang; Fang, Tao; Yang, Yiming; Hu, Tao; Wang, Feixiang; Du, Guohao; Xue, Ye; Tong, Yali; Sun, Tao; Deng, Bangming; Xiao, Tiqiao

doi:10.1007/s41365-018-0417-x

Cited by 4 publications

(2 citation statements)

References 23 publications

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“…It uses different types of targets as light sources, and the X-ray focused through a multi-channel capillary generates a smaller spot size, which greatly enhances the light intensity and improves the peakto-background ratio (PBR), thus realizing non-destructive and high-resolution elemental analysis [22][23][24][25]. Simple sample preparation, high resolution, and the non-destructive nature of the analysis provide strong advantages for µ-XRF in the characterization of element distributions of alloys, geological minerals, and biological samples [26][27][28][29][30][31][32][33][34]. For example, µ-XRF is used to characterize the distribution of sulfur in stalagmite samples [35].…”

Section: Introductionmentioning

confidence: 99%

Quantitative Characterization of Elemental Segregation in Inconel 718 Superalloy by Micro-Beam X-ray Fluorescence Spectroscopy and Its Correlation Study

Zhou,

Li,

Zhou

et al. 2023

Materials

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Inconel 718 (IN718) nickel-based superalloy is widely used in aerospace and nuclear applications owing to its excellent comprehensive mechanical properties, oxidation resistance, and hot corrosion resistance. However, the elemental segregation caused by heterogeneous solidification during casting has great influence on the mechanical properties. Therefore, accurately characterizing the segregation behavior is necessary. Traditional quantitative characterization of elemental segregation uses various sampling methods, in which only macroscopic segregation results are obtained. In this study, micro-beam X-ray fluorescence (μ-XRF) is used for the quantitative characterization of element micro-segregation in IN718 superalloy. The concentration distributions of Cr, Fe, Mo, Nb, and Ti in IN718 alloy are determined with optimized testing parameters, and the degree of elemental segregation in different regions of the analytical area is calculated. It is found that the segregation degree of Nb and Ti in the testing area is larger than other alloying elements. The correlation between the microstructure distribution and the segregation degree of Nb and Ti has been studied using scanning electron microscopy (SEM) combined with energy-dispersive spectrometry (EDS). There is severe segregation of Nb and Ti in areas where Nb-containing precipitates are accumulated. The distribution of abnormal signals of Nb with a high fluorescence intensity has a close relationship with the area of precipitates-enriched Nb.

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Section: Introductionmentioning

confidence: 99%

Quantitative Characterization of Elemental Segregation in Inconel 718 Superalloy by Micro-Beam X-ray Fluorescence Spectroscopy and Its Correlation Study

Zhou,

Li,

Zhou

et al. 2023

Materials

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“…X-ray free electron lasers (XFELs) play an important role in many research fields such as biology, nonlinear physics, and material science due to their high peak brightness, short pulse duration, and coherence [1,2]. However, the linear accelerator-based XFELs are unable to build as many experimental stations as the synchrotron radiation facility based on the storage ring, which makes it difficult to meet rapidly increasing user demands.…”

Section: Introductionmentioning

confidence: 99%

Multi-beam-energy operation for the continuous-wave x-ray free electron laser

Yan

Deng

2019

Phys. Rev. Accel. Beams

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The parallel operation of multiple undulator lines with a wide spectral range is an important way to increase the usability of x-ray free electron laser (XFEL) facilities, especially for machines with high-repetition-rate. In this paper, a delay system based on four double bend achromats is proposed to delay electron beams, thereby changing the arrival time of those delayed electron beams in the accelerating structure behind the system. Combined with kickers, the delay system can be used to generate bunch-to-bunch energy changed electron beams in a continuous wave XFEL facility. Startto-end simulations based on the parameters of the Shanghai high-repetition-rate XFEL and extreme light facility are performed to demonstrate that the delay system can flexibly control electron beam energy from 1.48 to 8.74 GeV at the end of the linac.

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Methodology development and application of X-ray imaging beamline at SSRF

Xie

Deng

et al. 2020

NUCL SCI TECH

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X-ray fluorescence microtomography based on polycapillary-focused X-rays from laboratory source

Cited by 4 publications

References 23 publications

Quantitative Characterization of Elemental Segregation in Inconel 718 Superalloy by Micro-Beam X-ray Fluorescence Spectroscopy and Its Correlation Study

Quantitative Characterization of Elemental Segregation in Inconel 718 Superalloy by Micro-Beam X-ray Fluorescence Spectroscopy and Its Correlation Study

Multi-beam-energy operation for the continuous-wave x-ray free electron laser

Methodology development and application of X-ray imaging beamline at SSRF

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