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Li J, Hallil A, Metsue A, Oudriss A, Bouhattate J, Feaugas X. Antagonist effects of grain boundaries between the trapping process and the fast diffusion path in nickel bicrystals. Sci Rep 2021; 11:15533. [PMID: 34330936 PMCID: PMC8324914 DOI: 10.1038/s41598-021-94107-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 06/30/2021] [Indexed: 11/29/2022] Open
Abstract
Hydrogen-grain-boundaries interactions and their role in intergranular fracture are well accepted as one of the key features in understanding hydrogen embrittlement in a large variety of common engineer situations. These interactions implicate some fundamental processes classified as segregation, trapping and diffusion of the solute which can be studied as a function of grain boundary configuration. In the present study, we carried out an extensive analysis of four grain-boundaries based on the complementary of atomistic calculations and experimental data. We demonstrate that elastic deformation has an important contribution on the segregation energy which cannot be simply reduced to a volume change and need to consider the deviatoric part of strain. Additionally, some significant configurations of the segregation energy depend on the long-range elastic distortion and allows to rationalize the elastic contribution in three terms. By investigating the different energy barriers involved to reach all the segregation sites, the antagonist impact of grain boundaries on hydrogen diffusion and trapping process was elucidated. The segregation energy and migration energy are two fundamental parameters in order to classify the grain-boundaries as a trapping location or short circuit for diffusion.
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Affiliation(s)
- J Li
- LaSIE UMR CNRS 7356, La Rochelle Université, Av. Michel Crépeau, 17042, La Rochelle Cedex 1, France
| | - A Hallil
- LaSIE UMR CNRS 7356, La Rochelle Université, Av. Michel Crépeau, 17042, La Rochelle Cedex 1, France
| | - A Metsue
- LaSIE UMR CNRS 7356, La Rochelle Université, Av. Michel Crépeau, 17042, La Rochelle Cedex 1, France
| | - A Oudriss
- LaSIE UMR CNRS 7356, La Rochelle Université, Av. Michel Crépeau, 17042, La Rochelle Cedex 1, France
| | - J Bouhattate
- LaSIE UMR CNRS 7356, La Rochelle Université, Av. Michel Crépeau, 17042, La Rochelle Cedex 1, France
| | - X Feaugas
- LaSIE UMR CNRS 7356, La Rochelle Université, Av. Michel Crépeau, 17042, La Rochelle Cedex 1, France.
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Liu LC, Gong HR. Hydrogen solubility and diffusivity at Σ3 grain boundary of PdCu. RSC Adv 2021; 11:13644-13652. [PMID: 35423865 PMCID: PMC8697505 DOI: 10.1039/d0ra10133h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 04/02/2021] [Indexed: 11/21/2022] Open
Abstract
First principles calculations have been performed to comparatively reveal hydrogen solubility and diffusivity at grain boundaries of BCC and FCC PdCu phases. It is found that the temperature-dependent hydrogen solubility at BCC Σ3 (112) GB of PdCu seems much higher than that in BCC PdCu bulk, while hydrogen solubility in FCC Σ3 (111) GB of PdCu is much lower than that in its corresponding FCC bulk. Calculations also reveal that grain boundary has an important effect on hydrogen diffusion of BCC and FCC PdCu, i.e., hydrogen diffusivities of BCC Σ3 (112) and FCC Σ3 (111) grain boundaries of PdCu seem much smaller and bigger than those of its corresponding bulks, respectively. The predicted results could deepen the comprehension of hydrogen solubility and diffusion of PdCu phases.
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Affiliation(s)
- L C Liu
- State Key Laboratory of Powder Metallurgy, Central South University Changsha Hunan 410083 China .,College of Physics and Electronics, Gannan Normal University Ganzhou Jiangxi 341000 China
| | - H R Gong
- State Key Laboratory of Powder Metallurgy, Central South University Changsha Hunan 410083 China
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Martin ML, Connolly MJ, DelRio FW, Slifka AJ. Hydrogen embrittlement in ferritic steels. APPLIED PHYSICS REVIEWS 2020; 7:10.1063/5.0012851. [PMID: 34122684 PMCID: PMC8194130 DOI: 10.1063/5.0012851] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 08/03/2020] [Indexed: 05/31/2023]
Abstract
Hydrogen will be a crucial pillar in the clean-energy foundation, and therefore, the development of safe and cost-effective storage and transportation methods is essential to its success. One of the key challenges in the development of such storage and transportation methods is related to the interaction of hydrogen with structural materials. Despite extensive work, there are significant questions related to the hydrogen embrittlement of ferritic steels due to challenges associated with these steels, coupled with the difficulties with gauging the hydrogen content in all materials. Recent advancements in experimental tools and multi-scale modeling are starting to provide insight into the embrittlement process. This review focuses on a subset of the recent developments, with an emphasis on how new methods have improved our understanding of the structure-property-performance relationships of ferritic steels subjected to mechanical loading in a hydrogen environment. The structure of ferritic steels in the presence of hydrogen is described in terms of the sorption and dissociation processes, the diffusion through the lattice and grain boundaries, and the hydrogen-steel interactions. The properties of ferritic steels subjected to mechanical loading in hydrogen are also investigated; the effects of test conditions and hydrogen pressure on the tensile, fracture, and fatigue properties of base metal and welds are highlighted. The performance of steels in hydrogen is then explored via a comprehensive analysis of the various embrittlement mechanisms. Finally, recent insights from in situ and high-resolution experiments are presented and future studies are proposed to address challenges related to embrittlement in ferritic steels.
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Affiliation(s)
- May L. Martin
- Applied Chemicals and Materials Division, Material Measurement Laboratory, National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - Matthew J. Connolly
- Applied Chemicals and Materials Division, Material Measurement Laboratory, National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - Frank W. DelRio
- Applied Chemicals and Materials Division, Material Measurement Laboratory, National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - Andrew J. Slifka
- Applied Chemicals and Materials Division, Material Measurement Laboratory, National Institute of Standards and Technology, Boulder, Colorado 80305, USA
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Zhou X, Mousseau N, Song J. Is Hydrogen Diffusion along Grain Boundaries Fast or Slow? Atomistic Origin and Mechanistic Modeling. PHYSICAL REVIEW LETTERS 2019; 122:215501. [PMID: 31283335 DOI: 10.1103/physrevlett.122.215501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Indexed: 06/09/2023]
Abstract
We perform comprehensive first-principles calculations and kinetic Monte Carlo simulations to explicitly elucidate the distinct roles of grain boundaries (GBs) in affecting hydrogen (H) diffusion in fcc nickel (Ni). We demonstrate the transition between slow and fast H diffusion along the GB with an abrupt change in H diffusivity. Low-angle GBs are shown to comprise isolated high-barrier regions to trap and inhibit H diffusion, with H diffusivity well prescribed by the classical trapping model, while high-angle GBs are shown to provide interconnected low-barrier channels to facilitate H transport. On the basis of the dislocation description of the GB and the Frank-Bilby model, the slow-fast diffusion transition is identified to result from dislocation core overlapping and is accurately predicted. The present Letter provides key mechanistic insights towards interpreting various experimental studies of H diffusion in metals, new critical knowledge for predictive modeling of H embrittlement, and better understanding of the kinetics of H and other interstitial impurities in microstructures.
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Affiliation(s)
- Xiao Zhou
- Department of Materials Engineering, McGill University, Montréal, Quebec H3A0C5, Canada
| | - Normand Mousseau
- Département de physique and Regroupement québécois sur les matériaux de pointe, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montréal, Québec H3C 3J7, Canada
| | - Jun Song
- Department of Materials Engineering, McGill University, Montréal, Quebec H3A0C5, Canada
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Hydrogen Permeation, and Mechanical and Tribological Behavior, of CrNx Coatings Deposited at Various Bias Voltages on IN718 by Direct Current Reactive Sputtering. COATINGS 2018. [DOI: 10.3390/coatings8020066] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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The dual role of coherent twin boundaries in hydrogen embrittlement. Nat Commun 2015; 6:6164. [PMID: 25652438 DOI: 10.1038/ncomms7164] [Citation(s) in RCA: 139] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Accepted: 12/22/2014] [Indexed: 11/08/2022] Open
Abstract
Hydrogen embrittlement (HE) causes engineering alloys to fracture unexpectedly, often at considerable economic or environmental cost. Inaccurate predictions of component lifetimes arise from inadequate understanding of how alloy microstructure affects HE. Here we investigate hydrogen-assisted fracture of a Ni-base superalloy and identify coherent twin boundaries (CTBs) as the microstructural features most susceptible to crack initiation. This is a surprising result considering the renowned beneficial effect of CTBs on mechanical strength and corrosion resistance of many engineering alloys. Remarkably, we also find that CTBs are resistant to crack propagation, implying that hydrogen-assisted crack initiation and propagation are governed by distinct physical mechanisms in Ni-base alloys. This finding motivates a re-evaluation of current lifetime models in light of the dual role of CTBs. It also indicates new paths to designing materials with HE-resistant microstructures.
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Liu JC, Marwick AD, LeGoues FK. Hydrogen segregation and trapping in the Al/Si(111) interface. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:1861-1874. [PMID: 9999725 DOI: 10.1103/physrevb.44.1861] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Palumbo G, Doyle D, El-Sherik A, Erb U, Aust K. Intercrystalline hydrogen transport in nanocrystalline nickel. ACTA ACUST UNITED AC 1991. [DOI: 10.1016/0956-716x(91)90114-g] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Yao J, Cahoon J. Theoretical modeling of gain boundary diffusion of hydrogen and its effect on permeation curves. ACTA ACUST UNITED AC 1991. [DOI: 10.1016/0956-7151(91)90332-u] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Yao J, Cahoon J. Experimental studies of grain boundary diffusion of hydrogen in metals. ACTA ACUST UNITED AC 1991. [DOI: 10.1016/0956-7151(91)90333-v] [Citation(s) in RCA: 76] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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