Hydrogen permeation in Fe-40at.% Al alloy at different temperatures

Kupka, M.; Stępień, K.

doi:10.1016/j.corsci.2008.11.026

Cited by 18 publications

(6 citation statements)

References 14 publications

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“…At the starting point, the H has two frequencies at 1506.80 and 1507.59 cm À1 . Our predicted barrier agrees with the H-diffusion barrier of 0.26 eV in bulk FeAl by DFT calculation, 23 but these are lower and higher than the experimental barriers of H diffusivity in Fe 3 Al (0.42 eV) 34 and Fe-40Al (0.22 eV), 35 respectively. As discussed above, H trapping around V Fe is thermodynamically and kinetically feasible away from the V Fe .…”

Section: Single H Trapping In V Fesupporting

confidence: 80%

Stability and clusterization of hydrogen-vacancy complexes in B2-FeAl: insight from hydrogen embrittlement

Zhang

Huang

et al. 2017

RSC Adv.

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Section: Single H Trapping In V Fesupporting

confidence: 80%

Stability and clusterization of hydrogen-vacancy complexes in B2-FeAl: insight from hydrogen embrittlement

Zhang

Huang

et al. 2017

RSC Adv.

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“…The amount of permeated hydrogen in the steel is known to relate to the effective diffusivity (D eff ) and sub-surface concentration (C o ) of atomic hydrogen at the charging side of the specimen [ [29][30][31][32]. For the permeation transients, two theoretical models have been suggested according to the different initial and boundary conditions: (1) constant concentration (CC) model; (2) constant flux (CF) model [33,34].…”

Section: Effect On the Effective Diffusivity And Sub-surface Concentrmentioning

confidence: 99%

Effect of electrodeposition parameters on the hydrogen permeation during Cu–Sn alloy electrodeposition

Meng

Sun

Wang

et al. 2010

Electrochimica Acta

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“…Density functional theory's local density approximation calculations [141], in addition to periodic density functional theory calculations within the generalized gradient approximation [142], predicted that hydrogen sits at tetrahedral sites in the bulk Fe-Al lattice, like its interstitial sites in bulk Fe [143]. The activation barrier of some different alloys is presented in Table 5 [142,144,145]. Hydrogen diffusivity in iron-aluminides is lower than in pure Fe (Table 5) [144,146,147].…”

Section: Mechanism Of Hydrogen Ingressmentioning

confidence: 99%

A Review on the Properties of Iron Aluminide Intermetallics

2016

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Iron aluminides have been among the most studied intermetallics since the 1930s, when their excellent oxidation resistance was first noticed. Their low cost of production, low density, high strength-to-weight ratios, good wear resistance, ease of fabrication and resistance to high temperature oxidation and sulfurization make them very attractive as a substitute for routine stainless steel in industrial applications. Furthermore, iron aluminides allow for the conservation of less accessible and expensive elements such as nickel and molybdenum. These advantages have led to the consideration of many applications, such as brake disks for windmills and trucks, filtration systems in refineries and fossil power plants, transfer rolls for hot-rolled steel strips, and ethylene crackers and air deflectors for burning high-sulfur coal. A wide application for iron aluminides in industry strictly depends on the fundamental understanding of the influence of (i) alloy composition; (ii) microstructure; and (iii) number (type) of defects on the thermo-mechanical properties. Additionally, environmental degradation of the alloys, consisting of hydrogen embrittlement, anodic or cathodic dissolution, localized corrosion and oxidation resistance, in different environments should be well known. Recently, some progress in the development of new micro-and nano-mechanical testing methods in addition to the fabrication techniques of micro-and nano-scaled samples has enabled scientists to resolve more clearly the effects of alloying elements, environmental items and crystal structure on the deformation behavior of alloys. In this paper, we will review the extensive work which has been done during the last decades to address each of the points mentioned above.

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Hydrogen permeation in Fe-40at.% Al alloy at different temperatures

Cited by 18 publications

References 14 publications

Stability and clusterization of hydrogen-vacancy complexes in B2-FeAl: insight from hydrogen embrittlement

Stability and clusterization of hydrogen-vacancy complexes in B2-FeAl: insight from hydrogen embrittlement

Effect of electrodeposition parameters on the hydrogen permeation during Cu–Sn alloy electrodeposition

A Review on the Properties of Iron Aluminide Intermetallics

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