Hydrogen embrittlement of 718 under cathodic polarization

Ramgopal Thodla; Ashwini Chandra; Xiaoji Li; Christopher D. Taylor; Huibin Ke; Narasi Sridhar

doi:10.1016/j.corsci.2019.108361

Hydrogen embrittlement of 718 under cathodic polarization

Ramgopal Thodla^*, Ashwini Chandra, Xiaoji Li, Christopher D. Taylor, Huibin Ke, Narasi Sridhar

^*此作品的通讯作者

科研成果: 期刊稿件 › 文章 › 同行评审

17 引用（Scopus）

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High strength nickel based alloys are extensively used in both O&G and Navy applications. 718 is one of the most commonly used alloys in these applications. Applied cathodic potential had a significant effect on the crack growth rate (CGR) of various grades of 718. Crevice geometry was used to estimate the crack tip pH and potential conditions under cathodic polarization. Density functional theory (DFT) modelling was performed to estimate the water coverage on fresh metal surfaces of 718 under the crack tip conditions. The CGR was related to the estimated water adsorption on fresh metal surfaces in the measured crack tip conditions.

源语言	英语
文章编号	108361
期刊	Corrosion Science
卷	165
DOI	https://doi.org/10.1016/j.corsci.2019.108361
出版状态	已出版 - 1 4月 2020
已对外发布	是

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title = "Hydrogen embrittlement of 718 under cathodic polarization",

abstract = "High strength nickel based alloys are extensively used in both O&G and Navy applications. 718 is one of the most commonly used alloys in these applications. Applied cathodic potential had a significant effect on the crack growth rate (CGR) of various grades of 718. Crevice geometry was used to estimate the crack tip pH and potential conditions under cathodic polarization. Density functional theory (DFT) modelling was performed to estimate the water coverage on fresh metal surfaces of 718 under the crack tip conditions. The CGR was related to the estimated water adsorption on fresh metal surfaces in the measured crack tip conditions.",

keywords = "718, Cathodic polarization, Crack Growth Rate, Crack tip chemistry, DFT modelling, Hydrogen embrittlement, Hydrogen generation",

author = "Ramgopal Thodla and Ashwini Chandra and Xiaoji Li and Taylor, {Christopher D.} and Huibin Ke and Narasi Sridhar",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

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AU - Thodla, Ramgopal

AU - Chandra, Ashwini

AU - Li, Xiaoji

AU - Taylor, Christopher D.

AU - Ke, Huibin

AU - Sridhar, Narasi

PY - 2020/4/1

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N2 - High strength nickel based alloys are extensively used in both O&G and Navy applications. 718 is one of the most commonly used alloys in these applications. Applied cathodic potential had a significant effect on the crack growth rate (CGR) of various grades of 718. Crevice geometry was used to estimate the crack tip pH and potential conditions under cathodic polarization. Density functional theory (DFT) modelling was performed to estimate the water coverage on fresh metal surfaces of 718 under the crack tip conditions. The CGR was related to the estimated water adsorption on fresh metal surfaces in the measured crack tip conditions.

AB - High strength nickel based alloys are extensively used in both O&G and Navy applications. 718 is one of the most commonly used alloys in these applications. Applied cathodic potential had a significant effect on the crack growth rate (CGR) of various grades of 718. Crevice geometry was used to estimate the crack tip pH and potential conditions under cathodic polarization. Density functional theory (DFT) modelling was performed to estimate the water coverage on fresh metal surfaces of 718 under the crack tip conditions. The CGR was related to the estimated water adsorption on fresh metal surfaces in the measured crack tip conditions.

KW - 718

KW - Cathodic polarization

KW - Crack Growth Rate

KW - Crack tip chemistry

KW - DFT modelling

KW - Hydrogen embrittlement

KW - Hydrogen generation

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DO - 10.1016/j.corsci.2019.108361

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VL - 165

JO - Corrosion Science

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ER -

Hydrogen embrittlement of 718 under cathodic polarization

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