Influence of Specimen Geometry and Surface Roughness on Hydrogen Behavior in Steel

Hudson, R. M.; Riedy, K. J.; Stragand, G. L.

doi:10.5006/0010-9312-18.2.79

Cited by 6 publications

(2 citation statements)

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“…Thus, compared to the polished surface, the grinded surface has high capability of trapping hydrogen, as demonstrated by Song et al [29], who reported that the AZ31 alloy with higher surface roughness possessed higher hydrogen content, regardless of heat treatment conditions of the alloys. Simultaneously, Hudson et al [30] stated that the rate of hydrogen absorption enhanced through roughening surface in SAE1020, types 1017 and 1205 steels. In addition, surface electron work function, which represents the minimum energy for electron immigration from solid surface to adjacent region outside of solid, depends on surface conditions.…”

Section: Discussionmentioning

confidence: 96%

Effect of Surface Roughness on Hydrogen-Induced Blister Behavior in Pure Iron

Wang

Huang

et al. 2020

Metals

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The effect of surface roughness on hydrogen-induced blister behavior in pure iron was explored using optical microscopy and microcomputerized tomography. Hydrogen was introduced into the samples by electrochemical precharging methods with various hydrogen charging times. It is found that grinded surface exhibits higher roughness and compressive residual stress compared to those of polished surface. With increasing hydrogen charging time, hydrogen-induced blister height, blister width and blister area fraction increase, regardless of the grinded surface and polished surface. Further, hydrogen blister height and width of grinded surface are comparative to polished surface under the same hydrogen charging time. However, the blister area fraction and the number of blister on polished surface are considerably higher than the grinded surface, indicating that polished surface is more susceptible to the formation of blisters than that of grinded surface, both of surface and interior of the samples. This is dominantly rationalized in terms of the suppression effect of hydrogen invasion in grinded surfaces due to their higher residual compressive stress and higher dislocation density.

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Section: Discussionmentioning

confidence: 96%

Effect of Surface Roughness on Hydrogen-Induced Blister Behavior in Pure Iron

Wang

Huang

et al. 2020

Metals

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“…In apparent contrast to the above, Hudson and co workers [9], and Smith ells and Ransle:-[10] r e- porLed Lh e opposite efrecL of s urface r ou ghn ess. However, in bo th of Lbese cases Lh e exp e rirn en tal procedu res were dirter en t f ronl caLhodiC' ch argin g, a nd involved different mechanisms or h~-droge n infusion.…”

Section: Effect Of Surface Roughnessmentioning

confidence: 98%

Permeation rates of electrolytic hydrogen and deuterium through iron

Pitts¹

1963

J. RES. NATL. BUR. STAN. SECT. C. ENG. INSTR.

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L Th e r elative p ermeatio n r ates of electrolytically di scha rged h ydrogen, deu terium , a nd mixt ures of t he t wo t hroug h sheet-iron cathodes were m eas ured , a nd values for bo th t he separatio n facto r a nd t he comb ined separa tion-p ermeation fac tor were determined. Also, data were obtained on t he influence of stra in , surface condition , a nd chemi cally precharged h ydrogen on t he p ermeation ratc of electrolytic h ydrogen. j

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Diffusion in Interstitial Alloys

Fast

1976

Gases in Metals

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Influence of Specimen Geometry and Surface Roughness on Hydrogen Behavior in Steel

Cited by 6 publications

References 0 publications

Effect of Surface Roughness on Hydrogen-Induced Blister Behavior in Pure Iron

Effect of Surface Roughness on Hydrogen-Induced Blister Behavior in Pure Iron

Permeation rates of electrolytic hydrogen and deuterium through iron

Diffusion in Interstitial Alloys

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