The influence of hydrogen on the plastic deformation ductility, and fracture of nickel in tension

Boniszewski, Tad; Smith, G. C.

doi:10.1016/0001-6160(63)90209-8

Cited by 191 publications

(39 citation statements)

References 31 publications

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“…Good agreements were observed between the prediction and the experimental results. Similar dependence has been observed in nickel-hydrogen I a ys (13). Following the procedures of Harper, we plotted log(l-f) against t in Fig.…”

Section: Eclsupporting

confidence: 68%

Acoustic Emission Behavior of Nickel During Tensile Deformation

Hsu¹,

Ono²

1983

The Journal of the Acoustical Society of America

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Section: Eclsupporting

confidence: 68%

Acoustic Emission Behavior of Nickel During Tensile Deformation

Hsu¹,

Ono²

1983

The Journal of the Acoustical Society of America

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“…[13,34] Others argue for cracking through or along a hydride ((Ni,Cu) x H), which can form in Monel K-500 at 298 K (25°C) and H contents of 10 to 25 parts-per-million by weight (wppm). [20,[35][36][37] The contributions of these mechanisms to HEAC are controversial, [13,34] but recent transmission electron microscopy suggests interactive HEDE and HELP. [38] Boundary decohesion is enabled by local stress elevation from H-sensitive strain hardening, plus H enrichment due to slip band or substructure trapping of H and H transport from dislocation plasticity.…”

Section: Introductionmentioning

confidence: 99%

Measurement and Modeling of Hydrogen Environment-Assisted Cracking in Monel K-500

Gangloff

Burns

et al. 2014

Metall Mater Trans A

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Hydrogen environment-assisted cracking (HEAC) of Monel K-500 is quantified using slow-rising stress intensity loading with electrical potential monitoring of small crack propagation and elastoplastic J-integral analysis. For this loading, with concurrent crack tip plastic strain and H accumulation, aged Monel K-500 is susceptible to intergranular HEAC in NaCl solution when cathodically polarized at À800 mV SCE (E A , vs saturated calomel) and lower. Intergranular cracking is eliminated by reduced cathodic polarization more positive than À750 mV SCE . Crack tip diffusible H concentration rises, from near 0 wppm at E A of À765 mV SCE , with increasing cathodic polarization. This behavior is quantified by thermal desorption spectroscopy and barnacle cell measurements of hydrogen solubility vs overpotential for planar electrodes, plus measured-local crevice potential, and pH scaled to the crack tip. Using crack tip H concentration, excellent agreement is demonstrated between measurements and decohesion-based model predictions of the E A dependencies of threshold stress intensity and Stage II growth rate. A critical level of cathodic polarization must be exceeded for HEAC to occur in aged Monel K-500. The damaging-cathodic potential regime likely shifts more negative for quasi-static loading or increasing metallurgical resistance to HEAC.

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“…Furthermore, the same trend was observed more apparently with Rockwell and Vickers hardness measurements. It is therefore believed that hydrogen softening could occur even with a small amount (several ppm levels) of internal hydrogen when it was evenly distributed, though there have been fewer reports on hydrogen softening 17,24,37) than hardening [38][39][40][41] in the literature. 42) In any event, it is difficult to understand their fundamental mechanisms and make direct comparison between them, because there has been a variety of sample geometries and testing conditions used in different studies.…”

Section: Tensile Properties and Hydrogen Effectsmentioning

confidence: 99%

Effects of Hydrogen Diffusion on the Mechanical Properties of Austenite 316L Steel at Ambient Temperature

Kim

et al. 2011

Mater. Trans.

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This study examined how the strain rate affects the room-temperature tensile behavior of hydrogen-charged 316L stainless steels. A hightemperature homogenization treatment was applied to the specimens after hydrogen charging and copper electroplating to remove the hydrogen concentration gradient. A softening phenomenon was observed in the hardening behavior of the H-charged and homogenized specimen at a strain rate of 2 Â 10 À3 /s. The observation was further confirmed by an inspection of the fracture surface of the tensile test specimen.

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The influence of hydrogen on the plastic deformation ductility, and fracture of nickel in tension

Cited by 191 publications

References 31 publications

Acoustic Emission Behavior of Nickel During Tensile Deformation

Acoustic Emission Behavior of Nickel During Tensile Deformation

Measurement and Modeling of Hydrogen Environment-Assisted Cracking in Monel K-500

Effects of Hydrogen Diffusion on the Mechanical Properties of Austenite 316L Steel at Ambient Temperature

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