Quantitative analysis of carbon in cementite using pulsed laser atom probe

Kitaguchi, Hiroto; Lozano-Pérez, Sergio; Moody, Michael P.

doi:10.1016/j.ultramic.2014.06.004

Cited by 42 publications

(30 citation statements)

References 35 publications

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“…[92] During the treatment, the substrate is gradually saturated with N that has diffused through h, [93] eventually leading to formation of an e layer underneath the h layer. [50] h produced under these conditions has been investigated by atom probe tomography, [94] revealing, nevertheless, a maximum total impurity content of only 0.01 at. pct, also including N. This supports the above experimental results of Reference 91 and is in contrast with the prediction of N contents of>1 at.…”

Section: B Ternary Fe-n-c Datamentioning

confidence: 99%

Thermodynamics of the Fe-N and Fe-N-C Systems: The Fe-N and Fe-N-C Phase Diagrams Revisited

Göhring

Fabrichnaya

Leineweber

et al. 2016

Metall Mater Trans A

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Several thermodynamic descriptions of the Fe-N and Fe-N-C systems were proposed before now. The results of these descriptions significantly deviate from more recently obtained experimental data. The present work provides a revised thermodynamic description of these systems. The new description for the Fe-N system agrees distinctly better with the experimental data especially for the equilibrium of c 0 -Fe 4 N 1Àx and e-Fe 3 N 1+z . The new thermodynamic description for the Fe-N-C system considering the Fe-rich part of the system with less than 33 at. pct N and less than 25 at. pct C excellently agrees with the new experimental data for both the temperatures of the invariant reactions and the phase boundaries. This in particular concerns the temperature range of typical technical nitriding and nitrocarburizing treatments [723 K to 923 K, (450°C to 650°C)], within which three invariant reactions occur in the ternary system.

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Section: B Ternary Fe-n-c Datamentioning

confidence: 99%

Thermodynamics of the Fe-N and Fe-N-C Systems: The Fe-N and Fe-N-C Phase Diagrams Revisited

Göhring

Fabrichnaya

Leineweber

et al. 2016

Metall Mater Trans A

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“…Recent TEM and SEM studies [1,2] have revealed detailed information about the microstructure in the vicinity of the fusion boundary of 8630/625 dissimilar welds and the fracture morphologies which alternates between a flat cleavage-like morphology and a highly irregular cratered structure. Figure 1 [3] shows a simplification of the interface microstructure of a 8630/625 dissimilar weld, [4][5][6], i.e. at the interface between the steel and the buttering.…”

Section: Introduction 1hydrogen Embrittlement In Dissimilar Weld Intmentioning

confidence: 99%

A micromechanical image-based model for the featureless zone of a Fe–Ni dissimilar weld

Barrera

Tarleton

2014

Philosophical Magazine

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“…Conventional chemical analysis, however, was unable to reveal a significant N uptake in the cementite prepared in the presence of NH 3 . Such results were recently supported using a pulsed layer atom probe (Kitaguchi et al, 2014).…”

Section: Comparison With Previous Thermal Expansion Datamentioning

confidence: 65%

Thermal expansion anisotropy as source for microstrain broadening of polycrystalline cementite, Fe₃C

Leineweber¹

2016

J Appl Crystallogr

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Cementite (Fe3C) powder consisting of polycrystalline particles was investigated by synchrotron X‐ray diffraction and neutron diffraction at temperatures between 10 and 973 K. The data reveal a pronouncedly anisotropic thermal expansion of the orthorhombic unit cell as well as microstrain broadening varying considerably with temperature. Using a theory for predicting thermal‐microstress‐induced microstrain already applied in previous work to ambient‐temperature sealed‐tube X‐ray powder diffraction data from the same material [Leineweber (2012). J. Appl. Cryst.45, 944–949], the temperature‐dependent extent of the measured microstrain broadening could be quantitatively related to the measured temperature‐dependent anisotropy of the thermal expansion. Thereby, the fact that the extent of the measured microstrain broadening is somewhat smaller than the predicted amount can be explained by the presence of the free surfaces of the powder particles reducing the level of microstress‐induced microstrain.

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Quantitative analysis of carbon in cementite using pulsed laser atom probe

Cited by 42 publications

References 35 publications

Thermodynamics of the Fe-N and Fe-N-C Systems: The Fe-N and Fe-N-C Phase Diagrams Revisited

Thermodynamics of the Fe-N and Fe-N-C Systems: The Fe-N and Fe-N-C Phase Diagrams Revisited

A micromechanical image-based model for the featureless zone of a Fe–Ni dissimilar weld

Thermal expansion anisotropy as source for microstrain broadening of polycrystalline cementite, Fe₃C

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Quantitative analysis of carbon in cementite using pulsed laser atom probe

Cited by 42 publications

References 35 publications

Thermodynamics of the Fe-N and Fe-N-C Systems: The Fe-N and Fe-N-C Phase Diagrams Revisited

Thermodynamics of the Fe-N and Fe-N-C Systems: The Fe-N and Fe-N-C Phase Diagrams Revisited

A micromechanical image-based model for the featureless zone of a Fe–Ni dissimilar weld

Thermal expansion anisotropy as source for microstrain broadening of polycrystalline cementite, Fe3C

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Thermal expansion anisotropy as source for microstrain broadening of polycrystalline cementite, Fe₃C